English verb conjugation
CAN BURL

Regular verb: burl - burled - burled

Affirmation

Simple form	V-ing form
I can burl you can burl she can burl we can burl you can burl they can burl	I can be burling you can be burling she can be burling we can be burling you can be burling they can be burling
Perfect	V-ing perfect
I can have burled you can have burled she can have burled we can have burled you can have burled they can have burled	I can have been burling you can have been burling she can have been burling we can have been burling you can have been burling they can have been burling

Negation

Simple form	V-ing form
I cannot burl you cannot burl she cannot burl we cannot burl you cannot burl they cannot burl	I cannot be burling you cannot be burling she cannot be burling we cannot be burling you cannot be burling they cannot be burling
Perfect	V-ing perfect
I cannot have burled you cannot have burled she cannot have burled we cannot have burled you cannot have burled they cannot have burled	I cannot have been burling you cannot have been burling she cannot have been burling we cannot have been burling you cannot have been burling they cannot have been burling

Interrogative form

Simple form	V-ing form
can I burl? can you burl? can she burl? can we burl? can you burl? can they burl?	can I be burling? can you be burling? can she be burling? can we be burling? can you be burling? can they be burling?
Perfect	V-ing perfect
can I have burled? can you have burled? can she have burled? can we have burled? can you have burled? can they have burled?	can I have been burling? can you have been burling? can she have been burling? can we have been burling? can you have been burling? can they have been burling?

Interro-negative form

Simple form	V-ing form
can I not burl? can you not burl? can she not burl? can we not burl? can you not burl? can they not burl?	can I not be burling? can you not be burling? can she not be burling? can we not be burling? can you not be burling? can they not be burling?
Perfect	V-ing perfect
can I not have burled? can you not have burled? can she not have burled? can we not have burled? can you not have burled? can they not have burled?	can I not have been burling? can you not have been burling? can she not have been burling? can we not have been burling? can you not have been burling? can they not have been burling?