Features of Japanese Verbs Groups
Japanese verbs are classified into 3 groups.
Group I verbs (U-verb)
Dictionary forms end in the syllables う-u, く-ku, ぐ-gu, す-su, つ-tsu, ぬ-nu, ぶ-bu, む-mu, -るru.
The last sound of the ますforms is from い column い-i, ち-chi, り-ri, き-ki, ぎ-gi, に-ni, び-bi, み-mi, し-shi.
The potential form of Group 1 verb: drop the final う-u and add eる-eru.
Group 1 verb conjugation pattern:
ない form (-a) またない
ます form (-i) まちます
dictionary form (-u) まつ
potential form (-e) まてる
volitional form (-o) まとう
Group II verbs (Ru-verb)
Dictionary forms end in る-ru (following either i or e).
The last sound of the ますforms is from え column. example:食べる taberu (eat). However, in some verbs, it is from theい column.example:見る miru (see)
The potential form of Group 2 verb: drop the final る-ru and add られる-rareru.
Group 2 verb conjugation pattern:
ない form たべ+ない
ます form たべ+ます
dictionary form たべ+る
potential form たべ+られる
volitional form たべ+よう
Group Ill verbs
Irregular Verb (usually just two are distinguished, くる kuru ‘come' and する suru 'do’) are included in this group. This group includes action-denoting nouns +する suru too.
Group 2 verb conjugation pattern する:
ない form しない
ます form します
dictionary form する
potential form できる
volitional form しよう
Group 3 verb conjugation pattern くる:
ない form こない
ます form きます
dictionary form くる
potential form こられる
volitional form こよう
Verb Conjugations List
Verb Conjugations List
https://www.hanaskyglobal.com/japanese-verb-conjugation