English verb conjugation
CAN FURL

Regular verb: furl - furled - furled

Affirmation

Simple form	V-ing form
I can furl you can furl he can furl we can furl you can furl they can furl	I can be furling you can be furling he can be furling we can be furling you can be furling they can be furling
Perfect	V-ing perfect
I can have furled you can have furled he can have furled we can have furled you can have furled they can have furled	I can have been furling you can have been furling he can have been furling we can have been furling you can have been furling they can have been furling

Negation

Simple form	V-ing form
I can't furl you can't furl he can't furl we can't furl you can't furl they can't furl	I can't be furling you can't be furling he can't be furling we can't be furling you can't be furling they can't be furling
Perfect	V-ing perfect
I can't have furled you can't have furled he can't have furled we can't have furled you can't have furled they can't have furled	I can't have been furling you can't have been furling he can't have been furling we can't have been furling you can't have been furling they can't have been furling

Interrogative form

Simple form	V-ing form
can I furl? can you furl? can he furl? can we furl? can you furl? can they furl?	can I be furling? can you be furling? can he be furling? can we be furling? can you be furling? can they be furling?
Perfect	V-ing perfect
can I have furled? can you have furled? can he have furled? can we have furled? can you have furled? can they have furled?	can I have been furling? can you have been furling? can he have been furling? can we have been furling? can you have been furling? can they have been furling?

Interro-negative form

Simple form	V-ing form
can't I furl? can't you furl? can't he furl? can't we furl? can't you furl? can't they furl?	can't I be furling? can't you be furling? can't he be furling? can't we be furling? can't you be furling? can't they be furling?
Perfect	V-ing perfect
can't I have furled? can't you have furled? can't he have furled? can't we have furled? can't you have furled? can't they have furled?	can't I have been furling? can't you have been furling? can't he have been furling? can't we have been furling? can't you have been furling? can't they have been furling?