English verb conjugation
COULD JAPAN JAPAN

Regular verb: japan japan - japan japaned - japan japaned

Warning, this verb may not exist. Conjugation is given as example.

Affirmation

Simple form	V-ing form
I could japan japan you could japan japan he could japan japan we could japan japan you could japan japan they could japan japan	I could be japan japaning you could be japan japaning he could be japan japaning we could be japan japaning you could be japan japaning they could be japan japaning
Perfect	V-ing perfect
I could have japan japaned you could have japan japaned he could have japan japaned we could have japan japaned you could have japan japaned they could have japan japaned	I could have been japan japaning you could have been japan japaning he could have been japan japaning we could have been japan japaning you could have been japan japaning they could have been japan japaning

Negation

Simple form	V-ing form
I couldn't japan japan you couldn't japan japan he couldn't japan japan we couldn't japan japan you couldn't japan japan they couldn't japan japan	I couldn't be japan japaning you couldn't be japan japaning he couldn't be japan japaning we couldn't be japan japaning you couldn't be japan japaning they couldn't be japan japaning
Perfect	V-ing perfect
I couldn't have japan japaned you couldn't have japan japaned he couldn't have japan japaned we couldn't have japan japaned you couldn't have japan japaned they couldn't have japan japaned	I couldn't have been japan japaning you couldn't have been japan japaning he couldn't have been japan japaning we couldn't have been japan japaning you couldn't have been japan japaning they couldn't have been japan japaning

Interrogative form

Simple form	V-ing form
could I japan japan? could you japan japan? could he japan japan? could we japan japan? could you japan japan? could they japan japan?	could I be japan japaning? could you be japan japaning? could he be japan japaning? could we be japan japaning? could you be japan japaning? could they be japan japaning?
Perfect	V-ing perfect
could I have japan japaned? could you have japan japaned? could he have japan japaned? could we have japan japaned? could you have japan japaned? could they have japan japaned?	could I have been japan japaning? could you have been japan japaning? could he have been japan japaning? could we have been japan japaning? could you have been japan japaning? could they have been japan japaning?

Interro-negative form

Simple form	V-ing form
couldn't I japan japan? couldn't you japan japan? couldn't he japan japan? couldn't we japan japan? couldn't you japan japan? couldn't they japan japan?	couldn't I be japan japaning? couldn't you be japan japaning? couldn't he be japan japaning? couldn't we be japan japaning? couldn't you be japan japaning? couldn't they be japan japaning?
Perfect	V-ing perfect
couldn't I have japan japaned? couldn't you have japan japaned? couldn't he have japan japaned? couldn't we have japan japaned? couldn't you have japan japaned? couldn't they have japan japaned?	couldn't I have been japan japaning? couldn't you have been japan japaning? couldn't he have been japan japaning? couldn't we have been japan japaning? couldn't you have been japan japaning? couldn't they have been japan japaning?