[Proud2bemom]

Intermediate Endings
Form (*) Regular Verbs Irregular Verbs
[I] [II] kuru suru [d] [D]
Potential 7 -e-[I]
Passive 3 -rare-[I] -are-[I] korare-[I] sare-[I]
Causative/Permissive 3 -sase-[I] -ase-[I] kosase-[I] sase-[I]
Passive Causative 3 -sare-[I] -asare-[I]
Progressive 2 -te i-[I] -te i-[I] kite i-[I] shite i-[I]
Polite 1,5 -mas-[II] -imas-[II] kimas-[II] shimas-[II]
Negative 3,5 -na-[A] -ana-[A] kona-[A] shina-[A] ja na-[A] dewa arimasen [D]
Polite Negative 1,5 -masen [D] -imasen [D] kimasen [D] shimasen [D]
Desiderative 1 -ta-[A] -ita-[A] kita-[A] shita-[A]
Terminal Endings
Form (*) Regular Verbs Irregular Verbs Adjectives
[I] [II] kuru suru [d] [D] [A]
Present/ Attributive 1 -ru -u kuru suru da desu -i
-na
Past / Present Perfect 2 -ta -ta kita shita datta deshita -katta
Future / Probable Present 3 -you -ou kiyou shiyou darou deshou -karou
1 -ru deshou -u deshou -i deshou
Probable Past 2 -tarou -tarou kitarou shitarou -kattarou
-ta deshou -ta deshou kita deshou shita deshou -katta deshou
Present Conditional 8 -reba -eba kureba sureba nara nareba -kereba
-i nara(ba)
Past Conditional 2 -tara -tara kitara shitara dattara deshitara -kattara
Gerund / Conjunctive 2 -te -te kite shite de de -kute
deshite -i de
Noun Form 1 - -i ki shi -sa
Pronoun Form 1 -ru no -u no -i no
Predicative / Adverbial -ku
4 -u (with gozaru)
-i (with desu)


Notes on the Conjugation Tables
0. Exceptions to the general verb classifications
Class-[I] Class-[II]
kaeru (``to change'') kaeru (``to return'')
iru (``to be'') iru (``to be necessary'')
kiru (``to wear'') kiru (``to cut'')
shiru; hairu; hashiru
1. Standard syllabic sound changes
Sound Change
t-u -> tsu
t-i -> chi
s-i -> shi
2. Sound changes for class-[II] verbs adding endings with t
Sound Change Comments
a-t -> att ...similarly for e-t, i-t, o-t, u-t
b-t -> nd ...identically for m-t, n-t
g-t -> id
k-t -> it ...except for the verb iku, which changes from ik-t to itt
r-t -> tt
s-t -> ****
3. Sound changes for class-[II] verbs adding vowel endings
Sound Change Comments
a-a -> awa ...similarly for e-a, i-a, o-a, u-a
a-o -> ayo ...similarly for e-o, i-o, o-o, u-o
4. Sound changes for adjectives adding -u
Sound Change
a-u -> ou
i-u -> iuu
shi-u -> shuu
o-u -> ou
5. Sound changes for the polite ending -mas-

For the Polite Negative Present (-masen [D]), the desu is dropped leaving just the ending -masen. The ending -mas- is slightly irregular:
Sound Change
-mas-oo -> -mashoo
-mas-eba -> -masureba
6. Irregular Honorary Forms

The honorary verbs kudasaru, nasaru, gozaru, irassharu, ossharu drop the r in their Imperative forms kudasai (etc.) and the Polite forms kudasaimas- (etc.).
7. Special Potential Form

This special Potential form may ony be used for transitive class-[II] verbs. Other verbs can be made potential by appending the expression koto ga deki-[I] to the simple Present form of the verb. The Passive can also function as a potential (particularly for class-[I] verbs).
8. Irregularities of Naru

Nara and nareba are really forms of naru