must canton
Regular verb: canton - cantoned- cantoned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must canton
you must canton
he must canton
we must canton
you must canton
they must canton 	I must be cantoning
you must be cantoning
he must be cantoning
we must be cantoning
you must be cantoning
they must be cantoning	I must have cantoned
you must have cantoned
he must have cantoned
we must have cantoned
you must have cantoned
they must have cantoned	I must have been cantoning
you must have been cantoning
he must have been cantoning
we must have been cantoning
you must have been cantoning
they must have been cantoning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't canton
you mustn't canton
he mustn't canton
we mustn't canton
you mustn't canton
they mustn't canton 	I mustn't be cantoning
you mustn't be cantoning
he mustn't be cantoning
we mustn't be cantoning
you mustn't be cantoning
they mustn't be cantoning	I mustn't have cantoned
you mustn't have cantoned
he mustn't have cantoned
we mustn't have cantoned
you mustn't have cantoned
they mustn't have cantoned	I mustn't have been cantoning
you mustn't have been cantoning
he mustn't have been cantoning
we mustn't have been cantoning
you mustn't have been cantoning
they mustn't have been cantoning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I canton?
must you canton?
must he canton?
must we canton?
must you canton?
must they canton? 	must I be cantoning?
must you be cantoning?
must he be cantoning?
must we be cantoning?
must you be cantoning?
must they be cantoning? 	must I have cantoned?
must you have cantoned?
must he have cantoned?
must we have cantoned?
must you have cantoned?
must they have cantoned? 	must I have been cantoning?
must you have been cantoning?
must he have been cantoning?
must we have been cantoning?
must you have been cantoning?
must they have been cantoning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I canton?
mustn't you canton?
mustn't he canton?
mustn't we canton?
mustn't you canton?
mustn't they canton? 	mustn't I be cantoning?
mustn't you be cantoning?
mustn't he be cantoning?
mustn't we be cantoning?
mustn't you be cantoning?
mustn't they be cantoning? 	mustn't I have cantoned?
mustn't you have cantoned?
mustn't he have cantoned?
mustn't we have cantoned?
mustn't you have cantoned?
mustn't they have cantoned? 	mustn't I have been cantoning?
mustn't you have been cantoning?
mustn't he have been cantoning?
mustn't we have been cantoning?
mustn't you have been cantoning?
mustn't they have been cantoning?