In Irish, there are different endings for verbs depending on who or what is the subject - who is doing the action in the sentence. But what has this got to do with conjugation? Well, in Irish ...

Next, if a verb has the vowel I in its syllable just before MASU, there are two patterns for this conjugation ... are KIMASU (to come), and SHIMASU (to do). KIMASU becomes KURU, and SHIMASU ...