must shoulder
Regular verb: shoulder - shouldered- shouldered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must shoulder
you must shoulder
he must shoulder
we must shoulder
you must shoulder
they must shoulder 	I must be shouldering
you must be shouldering
he must be shouldering
we must be shouldering
you must be shouldering
they must be shouldering	I must have shouldered
you must have shouldered
he must have shouldered
we must have shouldered
you must have shouldered
they must have shouldered	I must have been shouldering
you must have been shouldering
he must have been shouldering
we must have been shouldering
you must have been shouldering
they must have been shouldering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't shoulder
you mustn't shoulder
he mustn't shoulder
we mustn't shoulder
you mustn't shoulder
they mustn't shoulder 	I mustn't be shouldering
you mustn't be shouldering
he mustn't be shouldering
we mustn't be shouldering
you mustn't be shouldering
they mustn't be shouldering	I mustn't have shouldered
you mustn't have shouldered
he mustn't have shouldered
we mustn't have shouldered
you mustn't have shouldered
they mustn't have shouldered	I mustn't have been shouldering
you mustn't have been shouldering
he mustn't have been shouldering
we mustn't have been shouldering
you mustn't have been shouldering
they mustn't have been shouldering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I shoulder?
must you shoulder?
must he shoulder?
must we shoulder?
must you shoulder?
must they shoulder? 	must I be shouldering?
must you be shouldering?
must he be shouldering?
must we be shouldering?
must you be shouldering?
must they be shouldering? 	must I have shouldered?
must you have shouldered?
must he have shouldered?
must we have shouldered?
must you have shouldered?
must they have shouldered? 	must I have been shouldering?
must you have been shouldering?
must he have been shouldering?
must we have been shouldering?
must you have been shouldering?
must they have been shouldering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I shoulder?
mustn't you shoulder?
mustn't he shoulder?
mustn't we shoulder?
mustn't you shoulder?
mustn't they shoulder? 	mustn't I be shouldering?
mustn't you be shouldering?
mustn't he be shouldering?
mustn't we be shouldering?
mustn't you be shouldering?
mustn't they be shouldering? 	mustn't I have shouldered?
mustn't you have shouldered?
mustn't he have shouldered?
mustn't we have shouldered?
mustn't you have shouldered?
mustn't they have shouldered? 	mustn't I have been shouldering?
mustn't you have been shouldering?
mustn't he have been shouldering?
mustn't we have been shouldering?
mustn't you have been shouldering?
mustn't they have been shouldering?