must shingle
Regular verb: shingle - shingled- shingled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must shingle
you must shingle
she must shingle
we must shingle
you must shingle
they must shingle 	I must be shingling
you must be shingling
she must be shingling
we must be shingling
you must be shingling
they must be shingling	I must have shingled
you must have shingled
she must have shingled
we must have shingled
you must have shingled
they must have shingled	I must have been shingling
you must have been shingling
she must have been shingling
we must have been shingling
you must have been shingling
they must have been shingling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't shingle
you mustn't shingle
she mustn't shingle
we mustn't shingle
you mustn't shingle
they mustn't shingle 	I mustn't be shingling
you mustn't be shingling
she mustn't be shingling
we mustn't be shingling
you mustn't be shingling
they mustn't be shingling	I mustn't have shingled
you mustn't have shingled
she mustn't have shingled
we mustn't have shingled
you mustn't have shingled
they mustn't have shingled	I mustn't have been shingling
you mustn't have been shingling
she mustn't have been shingling
we mustn't have been shingling
you mustn't have been shingling
they mustn't have been shingling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I shingle?
must you shingle?
must she shingle?
must we shingle?
must you shingle?
must they shingle? 	must I be shingling?
must you be shingling?
must she be shingling?
must we be shingling?
must you be shingling?
must they be shingling? 	must I have shingled?
must you have shingled?
must she have shingled?
must we have shingled?
must you have shingled?
must they have shingled? 	must I have been shingling?
must you have been shingling?
must she have been shingling?
must we have been shingling?
must you have been shingling?
must they have been shingling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I shingle?
mustn't you shingle?
mustn't she shingle?
mustn't we shingle?
mustn't you shingle?
mustn't they shingle? 	mustn't I be shingling?
mustn't you be shingling?
mustn't she be shingling?
mustn't we be shingling?
mustn't you be shingling?
mustn't they be shingling? 	mustn't I have shingled?
mustn't you have shingled?
mustn't she have shingled?
mustn't we have shingled?
mustn't you have shingled?
mustn't they have shingled? 	mustn't I have been shingling?
mustn't you have been shingling?
mustn't she have been shingling?
mustn't we have been shingling?
mustn't you have been shingling?
mustn't they have been shingling?