English verb conjugation
COULD BLACKGUARD

Regular verb: blackguard - blackguarded - blackguarded

Affirmation

Simple form	V-ing form
I could blackguard you could blackguard she could blackguard we could blackguard you could blackguard they could blackguard	I could be blackguarding you could be blackguarding she could be blackguarding we could be blackguarding you could be blackguarding they could be blackguarding
Perfect	V-ing perfect
I could have blackguarded you could have blackguarded she could have blackguarded we could have blackguarded you could have blackguarded they could have blackguarded	I could have been blackguarding you could have been blackguarding she could have been blackguarding we could have been blackguarding you could have been blackguarding they could have been blackguarding

Negation

Simple form	V-ing form
I couldn't blackguard you couldn't blackguard she couldn't blackguard we couldn't blackguard you couldn't blackguard they couldn't blackguard	I couldn't be blackguarding you couldn't be blackguarding she couldn't be blackguarding we couldn't be blackguarding you couldn't be blackguarding they couldn't be blackguarding
Perfect	V-ing perfect
I couldn't have blackguarded you couldn't have blackguarded she couldn't have blackguarded we couldn't have blackguarded you couldn't have blackguarded they couldn't have blackguarded	I couldn't have been blackguarding you couldn't have been blackguarding she couldn't have been blackguarding we couldn't have been blackguarding you couldn't have been blackguarding they couldn't have been blackguarding

Interrogative form

Simple form	V-ing form
could I blackguard? could you blackguard? could she blackguard? could we blackguard? could you blackguard? could they blackguard?	could I be blackguarding? could you be blackguarding? could she be blackguarding? could we be blackguarding? could you be blackguarding? could they be blackguarding?
Perfect	V-ing perfect
could I have blackguarded? could you have blackguarded? could she have blackguarded? could we have blackguarded? could you have blackguarded? could they have blackguarded?	could I have been blackguarding? could you have been blackguarding? could she have been blackguarding? could we have been blackguarding? could you have been blackguarding? could they have been blackguarding?

Interro-negative form

Simple form	V-ing form
couldn't I blackguard? couldn't you blackguard? couldn't she blackguard? couldn't we blackguard? couldn't you blackguard? couldn't they blackguard?	couldn't I be blackguarding? couldn't you be blackguarding? couldn't she be blackguarding? couldn't we be blackguarding? couldn't you be blackguarding? couldn't they be blackguarding?
Perfect	V-ing perfect
couldn't I have blackguarded? couldn't you have blackguarded? couldn't she have blackguarded? couldn't we have blackguarded? couldn't you have blackguarded? couldn't they have blackguarded?	couldn't I have been blackguarding? couldn't you have been blackguarding? couldn't she have been blackguarding? couldn't we have been blackguarding? couldn't you have been blackguarding? couldn't they have been blackguarding?