Q: think, machine
A: The last letter of "think" is "k". The last letter of "machine" is "e". So "think, machine" is "ke".

Q: learning, reasoning, generalization
A: The last letter of "learning" is "g". The last letter of "reasoning" is "n". The last letter of "generalization" is "n". So "learning, reasoning, generalization" is "ggn".

Q: artificial, intelligence
A: The last letter of "artificial" is "l". The last letter of "intelligence" is "e". So "artificial, intelligence" is "le".

Q: transformer, language, vision
A: The last letter of "transformer" is "r". The last letter of "language" is "e". The last letter of "vision" is "n". So "transformer, language, vision" is "ren".

Q: foo,bar,NAME_1,blip
A: