must tamp
Regular verb: tamp - tamped- tamped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must tamp
you must tamp
she must tamp
we must tamp
you must tamp
they must tamp 	I must be tamping
you must be tamping
she must be tamping
we must be tamping
you must be tamping
they must be tamping	I must have tamped
you must have tamped
she must have tamped
we must have tamped
you must have tamped
they must have tamped	I must have been tamping
you must have been tamping
she must have been tamping
we must have been tamping
you must have been tamping
they must have been tamping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't tamp
you mustn't tamp
she mustn't tamp
we mustn't tamp
you mustn't tamp
they mustn't tamp 	I mustn't be tamping
you mustn't be tamping
she mustn't be tamping
we mustn't be tamping
you mustn't be tamping
they mustn't be tamping	I mustn't have tamped
you mustn't have tamped
she mustn't have tamped
we mustn't have tamped
you mustn't have tamped
they mustn't have tamped	I mustn't have been tamping
you mustn't have been tamping
she mustn't have been tamping
we mustn't have been tamping
you mustn't have been tamping
they mustn't have been tamping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I tamp?
must you tamp?
must she tamp?
must we tamp?
must you tamp?
must they tamp? 	must I be tamping?
must you be tamping?
must she be tamping?
must we be tamping?
must you be tamping?
must they be tamping? 	must I have tamped?
must you have tamped?
must she have tamped?
must we have tamped?
must you have tamped?
must they have tamped? 	must I have been tamping?
must you have been tamping?
must she have been tamping?
must we have been tamping?
must you have been tamping?
must they have been tamping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I tamp?
mustn't you tamp?
mustn't she tamp?
mustn't we tamp?
mustn't you tamp?
mustn't they tamp? 	mustn't I be tamping?
mustn't you be tamping?
mustn't she be tamping?
mustn't we be tamping?
mustn't you be tamping?
mustn't they be tamping? 	mustn't I have tamped?
mustn't you have tamped?
mustn't she have tamped?
mustn't we have tamped?
mustn't you have tamped?
mustn't they have tamped? 	mustn't I have been tamping?
mustn't you have been tamping?
mustn't she have been tamping?
mustn't we have been tamping?
mustn't you have been tamping?
mustn't they have been tamping?