English verb conjugation
COULD BLACKGUARD

Regular verb: blackguard - blackguarded - blackguarded

Affirmation

Simple form	V-ing form
I could blackguard you could blackguard he could blackguard we could blackguard you could blackguard they could blackguard	I could be blackguarding you could be blackguarding he 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 he 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 he 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 could not blackguard you could not blackguard he could not blackguard we could not blackguard you could not blackguard they could not blackguard	I could not be blackguarding you could not be blackguarding he could not be blackguarding we could not be blackguarding you could not be blackguarding they could not be blackguarding
Perfect	V-ing perfect
I could not have blackguarded you could not have blackguarded he could not have blackguarded we could not have blackguarded you could not have blackguarded they could not have blackguarded	I could not have been blackguarding you could not have been blackguarding he could not have been blackguarding we could not have been blackguarding you could not have been blackguarding they could not have been blackguarding

Interrogative form

Simple form	V-ing form
could I blackguard? could you blackguard? could he blackguard? could we blackguard? could you blackguard? could they blackguard?	could I be blackguarding? could you be blackguarding? could he 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 he 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 he 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
could I not blackguard? could you not blackguard? could he not blackguard? could we not blackguard? could you not blackguard? could they not blackguard?	could I not be blackguarding? could you not be blackguarding? could he not be blackguarding? could we not be blackguarding? could you not be blackguarding? could they not be blackguarding?
Perfect	V-ing perfect
could I not have blackguarded? could you not have blackguarded? could he not have blackguarded? could we not have blackguarded? could you not have blackguarded? could they not have blackguarded?	could I not have been blackguarding? could you not have been blackguarding? could he not have been blackguarding? could we not have been blackguarding? could you not have been blackguarding? could they not have been blackguarding?