must scamper
Regular verb: scamper - scampered- scampered

Affirmation 	
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I must scamper
you must scamper
he must scamper
we must scamper
you must scamper
they must scamper 	I must be scampering
you must be scampering
he must be scampering
we must be scampering
you must be scampering
they must be scampering	I must have scampered
you must have scampered
he must have scampered
we must have scampered
you must have scampered
they must have scampered	I must have been scampering
you must have been scampering
he must have been scampering
we must have been scampering
you must have been scampering
they must have been scampering	

Negation 	
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I mustn't scamper
you mustn't scamper
he mustn't scamper
we mustn't scamper
you mustn't scamper
they mustn't scamper 	I mustn't be scampering
you mustn't be scampering
he mustn't be scampering
we mustn't be scampering
you mustn't be scampering
they mustn't be scampering	I mustn't have scampered
you mustn't have scampered
he mustn't have scampered
we mustn't have scampered
you mustn't have scampered
they mustn't have scampered	I mustn't have been scampering
you mustn't have been scampering
he mustn't have been scampering
we mustn't have been scampering
you mustn't have been scampering
they mustn't have been scampering	

Interrogative form 	
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must I scamper?
must you scamper?
must he scamper?
must we scamper?
must you scamper?
must they scamper? 	must I be scampering?
must you be scampering?
must he be scampering?
must we be scampering?
must you be scampering?
must they be scampering? 	must I have scampered?
must you have scampered?
must he have scampered?
must we have scampered?
must you have scampered?
must they have scampered? 	must I have been scampering?
must you have been scampering?
must he have been scampering?
must we have been scampering?
must you have been scampering?
must they have been scampering? 	

Interro-negative form 	
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mustn't I scamper?
mustn't you scamper?
mustn't he scamper?
mustn't we scamper?
mustn't you scamper?
mustn't they scamper? 	mustn't I be scampering?
mustn't you be scampering?
mustn't he be scampering?
mustn't we be scampering?
mustn't you be scampering?
mustn't they be scampering? 	mustn't I have scampered?
mustn't you have scampered?
mustn't he have scampered?
mustn't we have scampered?
mustn't you have scampered?
mustn't they have scampered? 	mustn't I have been scampering?
mustn't you have been scampering?
mustn't he have been scampering?
mustn't we have been scampering?
mustn't you have been scampering?
mustn't they have been scampering?