must interplait
Regular verb: interplait - interplaited- interplaited

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must interplait
you must interplait
he must interplait
we must interplait
you must interplait
they must interplait 	I must be interplaiting
you must be interplaiting
he must be interplaiting
we must be interplaiting
you must be interplaiting
they must be interplaiting	I must have interplaited
you must have interplaited
he must have interplaited
we must have interplaited
you must have interplaited
they must have interplaited	I must have been interplaiting
you must have been interplaiting
he must have been interplaiting
we must have been interplaiting
you must have been interplaiting
they must have been interplaiting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't interplait
you mustn't interplait
he mustn't interplait
we mustn't interplait
you mustn't interplait
they mustn't interplait 	I mustn't be interplaiting
you mustn't be interplaiting
he mustn't be interplaiting
we mustn't be interplaiting
you mustn't be interplaiting
they mustn't be interplaiting	I mustn't have interplaited
you mustn't have interplaited
he mustn't have interplaited
we mustn't have interplaited
you mustn't have interplaited
they mustn't have interplaited	I mustn't have been interplaiting
you mustn't have been interplaiting
he mustn't have been interplaiting
we mustn't have been interplaiting
you mustn't have been interplaiting
they mustn't have been interplaiting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I interplait?
must you interplait?
must he interplait?
must we interplait?
must you interplait?
must they interplait? 	must I be interplaiting?
must you be interplaiting?
must he be interplaiting?
must we be interplaiting?
must you be interplaiting?
must they be interplaiting? 	must I have interplaited?
must you have interplaited?
must he have interplaited?
must we have interplaited?
must you have interplaited?
must they have interplaited? 	must I have been interplaiting?
must you have been interplaiting?
must he have been interplaiting?
must we have been interplaiting?
must you have been interplaiting?
must they have been interplaiting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I interplait?
mustn't you interplait?
mustn't he interplait?
mustn't we interplait?
mustn't you interplait?
mustn't they interplait? 	mustn't I be interplaiting?
mustn't you be interplaiting?
mustn't he be interplaiting?
mustn't we be interplaiting?
mustn't you be interplaiting?
mustn't they be interplaiting? 	mustn't I have interplaited?
mustn't you have interplaited?
mustn't he have interplaited?
mustn't we have interplaited?
mustn't you have interplaited?
mustn't they have interplaited? 	mustn't I have been interplaiting?
mustn't you have been interplaiting?
mustn't he have been interplaiting?
mustn't we have been interplaiting?
mustn't you have been interplaiting?
mustn't they have been interplaiting?