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 couldn't marl you couldn't marl he couldn't marl we couldn't marl you couldn't marl they couldn't marl	I couldn't be marling you couldn't be marling he couldn't be marling we couldn't be marling you couldn't be marling they couldn't be marling
Perfect	V-ing perfect
I couldn't have marled you couldn't have marled he couldn't have marled we couldn't have marled you couldn't have marled they couldn't have marled	I couldn't have been marling you couldn't have been marling he couldn't have been marling we couldn't have been marling you couldn't have been marling they couldn't 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
couldn't I marl? couldn't you marl? couldn't he marl? couldn't we marl? couldn't you marl? couldn't they marl?	couldn't I be marling? couldn't you be marling? couldn't he be marling? couldn't we be marling? couldn't you be marling? couldn't they be marling?
Perfect	V-ing perfect
couldn't I have marled? couldn't you have marled? couldn't he have marled? couldn't we have marled? couldn't you have marled? couldn't they have marled?	couldn't I have been marling? couldn't you have been marling? couldn't he have been marling? couldn't we have been marling? couldn't you have been marling? couldn't they have been marling?