English verb conjugation
MUST UNCURL

Regular verb: uncurl - uncurled - uncurled

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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