But -- The Greek word translated as "but" means "but," "however," and "on the other hand." It joins phrases in an adversarial way. Since it always falls in the second position, translating it as "however" often captures its feeling better. 

I -- This is from the first-person, singular form of the following verb.

tell -- The word translated as "tell " is the most common word that means "to say," and "to speak," but it also means "to teach," which seems to be the way Christ uses it more frequently. It also has many ancillary meanings such as "to count" ("to number" or like we might say, "to recount" a story) or "to choose for yourself." Christ usually uses this word to refer to his own speaking or teaching. The form of the verb could also be a possible action, "might say" or "should say."

you,  -- The Greek pronoun "you" here is plural and in the form of an indirect object, "to you," "for you," etc.

of a -- (IP) There is nothing that can be translated as this phrase in the Greek source.

truth, -- (WF) "Truth" is an adverb that means "actually," "really," "truly," and "obviously." It is from the adjective meaning "unconcealed" that is usually translated as "true." It is not commonly used by Jesus in Matthew and Mark. Luke used it to replace the Aramaic word amen ("truly"). This is not a noun but an adverb.

there -- This is from the third-person, plural form of the verb.

be -- (WN)The verb "be" here is the common form of "to be" in Greek. It means to have a certain characteristic or remain in a certain condition. It also equates terms or assigns characteristics.  The word also means "to exist" and where it doesn't connect to characteristics or conditions. This word is not singular but plural.

some -- The Greek word translated as "some" in the singular means "anyone," "someone,"  "something," and "anything." The same forms are used both for the masculine or feminine so "anyone" works best for a person. In the plural, it means "everyone," "some," "they," and "those." Jesus often uses it to start a question so it means "who," "what," or even "why."

- missing "those"  -- (MW) The untranslated word is the Greek definite article," the," which usually precedes a noun or changes the word it precedes (adjective, infinitive, participle, etc.) to act like a noun. The Greek article is much closer to our demonstrative pronouns ("this," "that," "these," and "those"). See this article for more. 

standing -- (WT) The verb translated as "standing" is a "multiple meaning" verb. It means "to make stand," "to set up," "to establish and similar words in the active form. In the passive and when the active form doesn't have an object, it means "to be placed," "to stand," and "to stand firm."  Like the English words "put" and "set," it has a number of specific meanings from "to put down [in writing]," "to bury," "to establish," "to make," "to cause," and "to assign." This is a word Jesus uses because of its multiple meanings. This is not the present but the past perfect tense, "has been."

here, -- The word translated as "here" in its adverbial form, means "just here" or "exactly there." 

which  -- The word translated as "which" is a demonstrative pronoun ("this" "that"), but it often acts as a pronoun, "he," "she," "it," "which," "what," "who," "whosoever," "where," "when," "for which reason," and many similar meanings.

shall -- (CW) This helping verb "shall" does not indicate the future tense, but that the verb describes a possibility, the subjunctive voice. A "might" or "should" in English is more appropriate but is assumed in an "if/when/whoever/except" clause. Helping verbs are not needed in Greek since the main verb carries this information in its form.

not -- (CW) The "not" here is both of the Greek negatives used together. Greek has two negatives, one objective, one subjective. The use of both together is more extreme, like saying, "never" or literally, "you cannot really think." When a negative precedes the verb, it affects the whole clause. When it precedes other words, its force is limited to those words.

taste - "Taste" is a verb that means "to taste," "to feel," and "to experience."

of -- This word "of"  comes from the genitive case of the following word that requires the addition of a preposition in English.  The most common is the "of" of possession.

death,  -- "Death" is the Greek word meaning "death" generally and the death penalty specifically.

till -- The word translated as "until" means "until" but it also means "till," "while," "as long as," "in order that."  With the particle of possibility and the subjunctive form of the verb, the sense is until some unknown time.

they -- This is from the third-person, plural form of the verb.

missing "possibly"  -- (MW) The untranslated word  is a particle used with verbs to indicate that the action is limited by circumstances or defined by conditions. There is no exact equivalent in English but "possibly" is close. This word works similarly to the "might" or "should" of a subjunctive verb, but we don't want to confuse it with the subjunctive so using "possibly" provides a consistent translation. 

missing "should" or "might"-- (WF) A helping verb is necessary because the following verb is a verb of possibility, a subjunctive, something that "should" or "might" occur. The helping verb is not needed in a clause beginning with an "if," "when," "whoever" and other conditional clauses.

see -- The verb translated as "knoweth" means "to see" but it is used like we use the word "see" to mean "to know" or "to perceive." In th KJV, it is almost translated as many times as "know" as it is "see."

the -- The word translated as "the" is the Greek definite article, which usually precedes a noun and, without a noun, takes the meaning of "the one." The Greek article is much closer to our demonstrative pronouns ("this", "that", "these", "those"). See this article for more. 

kingdom -- The word translated as "kingdom" can be the region, the reign, the castle or the authority of a ruler. Christ does not seem to use it to mean a physical region, so its translation as "reign" or "realm" seems more appropriate. This is especially true because the "reign" of a king means the execution of his will.

of -- This word comes from the genitive case of the following word(s) that required the addition of a preposition in English.  The most common is the "of" of possession, but it can also mean "belonging to," "part of", "which is", "than" (in comparisons), or  "for", "concerning" or "about" with transitive verbs. 

missing "the"  -- (MW) The untranslated word is the Greek definite article, which usually precedes a noun and, without a noun, takes the meaning of "the one." The Greek article is much closer to our demonstrative pronouns ("this", "that", "these", "those"). See this article for more. 

God. -- The word translated as "God" means "God" and "deity." It is introduced with an article, so "the God." Jesus often uses it this way perhaps to indicate the one God as opposed to the pagan gods.