English verb conjugation
COULD MARL

Regular verb: marl - marled - marled

Affirmation

Simple form	V-ing form
I could marl you could marl he could marl we could marl you could marl they could marl	I could be marling you could be marling he could be marling we could be marling you could be marling they could be marling
Perfect	V-ing perfect
I could have marled you could have marled he could have marled we could have marled you could have marled they could have marled	I could have been marling you could have been marling he could have been marling we could have been marling you could have been marling they could have been marling

Negation

Simple form	V-ing form
I could not marl you could not marl he could not marl we could not marl you could not marl they could not marl	I could not be marling you could not be marling he could not be marling we could not be marling you could not be marling they could not be marling
Perfect	V-ing perfect
I could not have marled you could not have marled he could not have marled we could not have marled you could not have marled they could not have marled	I could not have been marling you could not have been marling he could not have been marling we could not have been marling you could not have been marling they could not have been marling

Interrogative form

Simple form	V-ing form
could I marl? could you marl? could he marl? could we marl? could you marl? could they marl?	could I be marling? could you be marling? could he be marling? could we be marling? could you be marling? could they be marling?
Perfect	V-ing perfect
could I have marled? could you have marled? could he have marled? could we have marled? could you have marled? could they have marled?	could I have been marling? could you have been marling? could he have been marling? could we have been marling? could you have been marling? could they have been marling?

Interro-negative form

Simple form	V-ing form
could I not marl? could you not marl? could he not marl? could we not marl? could you not marl? could they not marl?	could I not be marling? could you not be marling? could he not be marling? could we not be marling? could you not be marling? could they not be marling?
Perfect	V-ing perfect
could I not have marled? could you not have marled? could he not have marled? could we not have marled? could you not have marled? could they not have marled?	could I not have been marling? could you not have been marling? could he not have been marling? could we not have been marling? could you not have been marling? could they not have been marling?