English verb conjugation
COULD BESMIRCH

Regular verb: besmirch - besmirched - besmirched

Affirmation

Simple form	V-ing form
I could besmirch you could besmirch he could besmirch we could besmirch you could besmirch they could besmirch	I could be besmirching you could be besmirching he could be besmirching we could be besmirching you could be besmirching they could be besmirching
Perfect	V-ing perfect
I could have besmirched you could have besmirched he could have besmirched we could have besmirched you could have besmirched they could have besmirched	I could have been besmirching you could have been besmirching he could have been besmirching we could have been besmirching you could have been besmirching they could have been besmirching

Negation

Simple form	V-ing form
I couldn't besmirch you couldn't besmirch he couldn't besmirch we couldn't besmirch you couldn't besmirch they couldn't besmirch	I couldn't be besmirching you couldn't be besmirching he couldn't be besmirching we couldn't be besmirching you couldn't be besmirching they couldn't be besmirching
Perfect	V-ing perfect
I couldn't have besmirched you couldn't have besmirched he couldn't have besmirched we couldn't have besmirched you couldn't have besmirched they couldn't have besmirched	I couldn't have been besmirching you couldn't have been besmirching he couldn't have been besmirching we couldn't have been besmirching you couldn't have been besmirching they couldn't have been besmirching

Interrogative form

Simple form	V-ing form
could I besmirch? could you besmirch? could he besmirch? could we besmirch? could you besmirch? could they besmirch?	could I be besmirching? could you be besmirching? could he be besmirching? could we be besmirching? could you be besmirching? could they be besmirching?
Perfect	V-ing perfect
could I have besmirched? could you have besmirched? could he have besmirched? could we have besmirched? could you have besmirched? could they have besmirched?	could I have been besmirching? could you have been besmirching? could he have been besmirching? could we have been besmirching? could you have been besmirching? could they have been besmirching?

Interro-negative form

Simple form	V-ing form
couldn't I besmirch? couldn't you besmirch? couldn't he besmirch? couldn't we besmirch? couldn't you besmirch? couldn't they besmirch?	couldn't I be besmirching? couldn't you be besmirching? couldn't he be besmirching? couldn't we be besmirching? couldn't you be besmirching? couldn't they be besmirching?
Perfect	V-ing perfect
couldn't I have besmirched? couldn't you have besmirched? couldn't he have besmirched? couldn't we have besmirched? couldn't you have besmirched? couldn't they have besmirched?	couldn't I have been besmirching? couldn't you have been besmirching? couldn't he have been besmirching? couldn't we have been besmirching? couldn't you have been besmirching? couldn't they have been besmirching?