must roast
Regular verb: roast - roasted- roasted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must roast
you must roast
she must roast
we must roast
you must roast
they must roast 	I must be roasting
you must be roasting
she must be roasting
we must be roasting
you must be roasting
they must be roasting	I must have roasted
you must have roasted
she must have roasted
we must have roasted
you must have roasted
they must have roasted	I must have been roasting
you must have been roasting
she must have been roasting
we must have been roasting
you must have been roasting
they must have been roasting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't roast
you mustn't roast
she mustn't roast
we mustn't roast
you mustn't roast
they mustn't roast 	I mustn't be roasting
you mustn't be roasting
she mustn't be roasting
we mustn't be roasting
you mustn't be roasting
they mustn't be roasting	I mustn't have roasted
you mustn't have roasted
she mustn't have roasted
we mustn't have roasted
you mustn't have roasted
they mustn't have roasted	I mustn't have been roasting
you mustn't have been roasting
she mustn't have been roasting
we mustn't have been roasting
you mustn't have been roasting
they mustn't have been roasting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I roast?
must you roast?
must she roast?
must we roast?
must you roast?
must they roast? 	must I be roasting?
must you be roasting?
must she be roasting?
must we be roasting?
must you be roasting?
must they be roasting? 	must I have roasted?
must you have roasted?
must she have roasted?
must we have roasted?
must you have roasted?
must they have roasted? 	must I have been roasting?
must you have been roasting?
must she have been roasting?
must we have been roasting?
must you have been roasting?
must they have been roasting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I roast?
mustn't you roast?
mustn't she roast?
mustn't we roast?
mustn't you roast?
mustn't they roast? 	mustn't I be roasting?
mustn't you be roasting?
mustn't she be roasting?
mustn't we be roasting?
mustn't you be roasting?
mustn't they be roasting? 	mustn't I have roasted?
mustn't you have roasted?
mustn't she have roasted?
mustn't we have roasted?
mustn't you have roasted?
mustn't they have roasted? 	mustn't I have been roasting?
mustn't you have been roasting?
mustn't she have been roasting?
mustn't we have been roasting?
mustn't you have been roasting?
mustn't they have been roasting?