English verb conjugation
COULD RESIGN

Regular verb: resign - resigned - resigned

Affirmation

Simple form	V-ing form
I could resign you could resign he could resign we could resign you could resign they could resign	I could be resigning you could be resigning he could be resigning we could be resigning you could be resigning they could be resigning
Perfect	V-ing perfect
I could have resigned you could have resigned he could have resigned we could have resigned you could have resigned they could have resigned	I could have been resigning you could have been resigning he could have been resigning we could have been resigning you could have been resigning they could have been resigning

Negation

Simple form	V-ing form
I couldn't resign you couldn't resign he couldn't resign we couldn't resign you couldn't resign they couldn't resign	I couldn't be resigning you couldn't be resigning he couldn't be resigning we couldn't be resigning you couldn't be resigning they couldn't be resigning
Perfect	V-ing perfect
I couldn't have resigned you couldn't have resigned he couldn't have resigned we couldn't have resigned you couldn't have resigned they couldn't have resigned	I couldn't have been resigning you couldn't have been resigning he couldn't have been resigning we couldn't have been resigning you couldn't have been resigning they couldn't have been resigning

Interrogative form

Simple form	V-ing form
could I resign? could you resign? could he resign? could we resign? could you resign? could they resign?	could I be resigning? could you be resigning? could he be resigning? could we be resigning? could you be resigning? could they be resigning?
Perfect	V-ing perfect
could I have resigned? could you have resigned? could he have resigned? could we have resigned? could you have resigned? could they have resigned?	could I have been resigning? could you have been resigning? could he have been resigning? could we have been resigning? could you have been resigning? could they have been resigning?

Interro-negative form

Simple form	V-ing form
couldn't I resign? couldn't you resign? couldn't he resign? couldn't we resign? couldn't you resign? couldn't they resign?	couldn't I be resigning? couldn't you be resigning? couldn't he be resigning? couldn't we be resigning? couldn't you be resigning? couldn't they be resigning?
Perfect	V-ing perfect
couldn't I have resigned? couldn't you have resigned? couldn't he have resigned? couldn't we have resigned? couldn't you have resigned? couldn't they have resigned?	couldn't I have been resigning? couldn't you have been resigning? couldn't he have been resigning? couldn't we have been resigning? couldn't you have been resigning? couldn't they have been resigning?