I must pave you must pave she must pave we must pave you must pave they must pave
V-ing form
I must be paving you must be paving she must be paving we must be paving you must be paving they must be paving
Perfect
I must have paved you must have paved she must have paved we must have paved you must have paved they must have paved
V-ing perfect
I must have been paving you must have been paving she must have been paving we must have been paving you must have been paving they must have been paving
Negation
Simple form
I mustn't pave you mustn't pave she mustn't pave we mustn't pave you mustn't pave they mustn't pave
V-ing form
I mustn't be paving you mustn't be paving she mustn't be paving we mustn't be paving you mustn't be paving they mustn't be paving
Perfect
I mustn't have paved you mustn't have paved she mustn't have paved we mustn't have paved you mustn't have paved they mustn't have paved
V-ing perfect
I mustn't have been paving you mustn't have been paving she mustn't have been paving we mustn't have been paving you mustn't have been paving they mustn't have been paving
Interrogative form
Simple form
must I pave? must you pave? must she pave? must we pave? must you pave? must they pave?
V-ing form
must I be paving? must you be paving? must she be paving? must we be paving? must you be paving? must they be paving?
Perfect
must I have paved? must you have paved? must she have paved? must we have paved? must you have paved? must they have paved?
V-ing perfect
must I have been paving? must you have been paving? must she have been paving? must we have been paving? must you have been paving? must they have been paving?
Interro-negative form
Simple form
mustn't I pave? mustn't you pave? mustn't she pave? mustn't we pave? mustn't you pave? mustn't they pave?
V-ing form
mustn't I be paving? mustn't you be paving? mustn't she be paving? mustn't we be paving? mustn't you be paving? mustn't they be paving?
Perfect
mustn't I have paved? mustn't you have paved? mustn't she have paved? mustn't we have paved? mustn't you have paved? mustn't they have paved?
V-ing perfect
mustn't I have been paving? mustn't you have been paving? mustn't she have been paving? mustn't we have been paving? mustn't you have been paving? mustn't they have been paving?