More on conjugations!

The conjugations are grouped based on the hiragana charts:
あえうえお - u group
かきくけこ - ku/gu group
さしすせそ - su group
たちつてと - tsu group
なにぬねの - nu group
はひふへほ - fu/bu group
まみむめも - mu group
らりるれろ - ru group

So each verb will end with one of the above group. And conjugations will follow the pattern in the respective group.

There are 2 exception verbs - (来る/くる) to come and (する) to do. These 2 words have their own individual patterns of conjugations which is different from the above.