English verb conjugation
CAN UNCURL

Regular verb: uncurl - uncurled - uncurled

Affirmation

Simple form	V-ing form
I can uncurl you can uncurl he can uncurl we can uncurl you can uncurl they can uncurl	I can be uncurling you can be uncurling he can be uncurling we can be uncurling you can be uncurling they can be uncurling
Perfect	V-ing perfect
I can have uncurled you can have uncurled he can have uncurled we can have uncurled you can have uncurled they can have uncurled	I can have been uncurling you can have been uncurling he can have been uncurling we can have been uncurling you can have been uncurling they can have been uncurling

Negation

Simple form	V-ing form
I can't uncurl you can't uncurl he can't uncurl we can't uncurl you can't uncurl they can't uncurl	I can't be uncurling you can't be uncurling he can't be uncurling we can't be uncurling you can't be uncurling they can't be uncurling
Perfect	V-ing perfect
I can't have uncurled you can't have uncurled he can't have uncurled we can't have uncurled you can't have uncurled they can't have uncurled	I can't have been uncurling you can't have been uncurling he can't have been uncurling we can't have been uncurling you can't have been uncurling they can't have been uncurling

Interrogative form

Simple form	V-ing form
can I uncurl? can you uncurl? can he uncurl? can we uncurl? can you uncurl? can they uncurl?	can I be uncurling? can you be uncurling? can he be uncurling? can we be uncurling? can you be uncurling? can they be uncurling?
Perfect	V-ing perfect
can I have uncurled? can you have uncurled? can he have uncurled? can we have uncurled? can you have uncurled? can they have uncurled?	can I have been uncurling? can you have been uncurling? can he have been uncurling? can we have been uncurling? can you have been uncurling? can they have been uncurling?

Interro-negative form

Simple form	V-ing form
can't I uncurl? can't you uncurl? can't he uncurl? can't we uncurl? can't you uncurl? can't they uncurl?	can't I be uncurling? can't you be uncurling? can't he be uncurling? can't we be uncurling? can't you be uncurling? can't they be uncurling?
Perfect	V-ing perfect
can't I have uncurled? can't you have uncurled? can't he have uncurled? can't we have uncurled? can't you have uncurled? can't they have uncurled?	can't I have been uncurling? can't you have been uncurling? can't he have been uncurling? can't we have been uncurling? can't you have been uncurling? can't they have been uncurling?