must count
Regular verb: count - counted- counted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must count
you must count
he must count
we must count
you must count
they must count 	I must be counting
you must be counting
he must be counting
we must be counting
you must be counting
they must be counting	I must have counted
you must have counted
he must have counted
we must have counted
you must have counted
they must have counted	I must have been counting
you must have been counting
he must have been counting
we must have been counting
you must have been counting
they must have been counting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't count
you mustn't count
he mustn't count
we mustn't count
you mustn't count
they mustn't count 	I mustn't be counting
you mustn't be counting
he mustn't be counting
we mustn't be counting
you mustn't be counting
they mustn't be counting	I mustn't have counted
you mustn't have counted
he mustn't have counted
we mustn't have counted
you mustn't have counted
they mustn't have counted	I mustn't have been counting
you mustn't have been counting
he mustn't have been counting
we mustn't have been counting
you mustn't have been counting
they mustn't have been counting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I count?
must you count?
must he count?
must we count?
must you count?
must they count? 	must I be counting?
must you be counting?
must he be counting?
must we be counting?
must you be counting?
must they be counting? 	must I have counted?
must you have counted?
must he have counted?
must we have counted?
must you have counted?
must they have counted? 	must I have been counting?
must you have been counting?
must he have been counting?
must we have been counting?
must you have been counting?
must they have been counting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I count?
mustn't you count?
mustn't he count?
mustn't we count?
mustn't you count?
mustn't they count? 	mustn't I be counting?
mustn't you be counting?
mustn't he be counting?
mustn't we be counting?
mustn't you be counting?
mustn't they be counting? 	mustn't I have counted?
mustn't you have counted?
mustn't he have counted?
mustn't we have counted?
mustn't you have counted?
mustn't they have counted? 	mustn't I have been counting?
mustn't you have been counting?
mustn't he have been counting?
mustn't we have been counting?
mustn't you have been counting?
mustn't they have been counting?