English verb conjugation
COULD BLACKBERRY

Regular verb: blackberry - blackberried - blackberried

Affirmation

Simple form	V-ing form
I could blackberry you could blackberry she could blackberry we could blackberry you could blackberry they could blackberry	I could be blackberrying you could be blackberrying she could be blackberrying we could be blackberrying you could be blackberrying they could be blackberrying
Perfect	V-ing perfect
I could have blackberried you could have blackberried she could have blackberried we could have blackberried you could have blackberried they could have blackberried	I could have been blackberrying you could have been blackberrying she could have been blackberrying we could have been blackberrying you could have been blackberrying they could have been blackberrying

Negation

Simple form	V-ing form
I couldn't blackberry you couldn't blackberry she couldn't blackberry we couldn't blackberry you couldn't blackberry they couldn't blackberry	I couldn't be blackberrying you couldn't be blackberrying she couldn't be blackberrying we couldn't be blackberrying you couldn't be blackberrying they couldn't be blackberrying
Perfect	V-ing perfect
I couldn't have blackberried you couldn't have blackberried she couldn't have blackberried we couldn't have blackberried you couldn't have blackberried they couldn't have blackberried	I couldn't have been blackberrying you couldn't have been blackberrying she couldn't have been blackberrying we couldn't have been blackberrying you couldn't have been blackberrying they couldn't have been blackberrying

Interrogative form

Simple form	V-ing form
could I blackberry? could you blackberry? could she blackberry? could we blackberry? could you blackberry? could they blackberry?	could I be blackberrying? could you be blackberrying? could she be blackberrying? could we be blackberrying? could you be blackberrying? could they be blackberrying?
Perfect	V-ing perfect
could I have blackberried? could you have blackberried? could she have blackberried? could we have blackberried? could you have blackberried? could they have blackberried?	could I have been blackberrying? could you have been blackberrying? could she have been blackberrying? could we have been blackberrying? could you have been blackberrying? could they have been blackberrying?

Interro-negative form

Simple form	V-ing form
couldn't I blackberry? couldn't you blackberry? couldn't she blackberry? couldn't we blackberry? couldn't you blackberry? couldn't they blackberry?	couldn't I be blackberrying? couldn't you be blackberrying? couldn't she be blackberrying? couldn't we be blackberrying? couldn't you be blackberrying? couldn't they be blackberrying?
Perfect	V-ing perfect
couldn't I have blackberried? couldn't you have blackberried? couldn't she have blackberried? couldn't we have blackberried? couldn't you have blackberried? couldn't they have blackberried?	couldn't I have been blackberrying? couldn't you have been blackberrying? couldn't she have been blackberrying? couldn't we have been blackberrying? couldn't you have been blackberrying? couldn't they have been blackberrying?