English verb conjugation
CAN KNOLL

Regular verb: knoll - knolled - knolled

Affirmation

Simple form	V-ing form
I can knoll you can knoll he can knoll we can knoll you can knoll they can knoll	I can be knolling you can be knolling he can be knolling we can be knolling you can be knolling they can be knolling
Perfect	V-ing perfect
I can have knolled you can have knolled he can have knolled we can have knolled you can have knolled they can have knolled	I can have been knolling you can have been knolling he can have been knolling we can have been knolling you can have been knolling they can have been knolling

Negation

Simple form	V-ing form
I cannot knoll you cannot knoll he cannot knoll we cannot knoll you cannot knoll they cannot knoll	I cannot be knolling you cannot be knolling he cannot be knolling we cannot be knolling you cannot be knolling they cannot be knolling
Perfect	V-ing perfect
I cannot have knolled you cannot have knolled he cannot have knolled we cannot have knolled you cannot have knolled they cannot have knolled	I cannot have been knolling you cannot have been knolling he cannot have been knolling we cannot have been knolling you cannot have been knolling they cannot have been knolling

Interrogative form

Simple form	V-ing form
can I knoll? can you knoll? can he knoll? can we knoll? can you knoll? can they knoll?	can I be knolling? can you be knolling? can he be knolling? can we be knolling? can you be knolling? can they be knolling?
Perfect	V-ing perfect
can I have knolled? can you have knolled? can he have knolled? can we have knolled? can you have knolled? can they have knolled?	can I have been knolling? can you have been knolling? can he have been knolling? can we have been knolling? can you have been knolling? can they have been knolling?

Interro-negative form

Simple form	V-ing form
can I not knoll? can you not knoll? can he not knoll? can we not knoll? can you not knoll? can they not knoll?	can I not be knolling? can you not be knolling? can he not be knolling? can we not be knolling? can you not be knolling? can they not be knolling?
Perfect	V-ing perfect
can I not have knolled? can you not have knolled? can he not have knolled? can we not have knolled? can you not have knolled? can they not have knolled?	can I not have been knolling? can you not have been knolling? can he not have been knolling? can we not have been knolling? can you not have been knolling? can they not have been knolling?