must chain
Regular verb: chain - chained- chained

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must chain
you must chain
he must chain
we must chain
you must chain
they must chain 	I must be chaining
you must be chaining
he must be chaining
we must be chaining
you must be chaining
they must be chaining	I must have chained
you must have chained
he must have chained
we must have chained
you must have chained
they must have chained	I must have been chaining
you must have been chaining
he must have been chaining
we must have been chaining
you must have been chaining
they must have been chaining	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't chain
you mustn't chain
he mustn't chain
we mustn't chain
you mustn't chain
they mustn't chain 	I mustn't be chaining
you mustn't be chaining
he mustn't be chaining
we mustn't be chaining
you mustn't be chaining
they mustn't be chaining	I mustn't have chained
you mustn't have chained
he mustn't have chained
we mustn't have chained
you mustn't have chained
they mustn't have chained	I mustn't have been chaining
you mustn't have been chaining
he mustn't have been chaining
we mustn't have been chaining
you mustn't have been chaining
they mustn't have been chaining	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I chain?
must you chain?
must he chain?
must we chain?
must you chain?
must they chain? 	must I be chaining?
must you be chaining?
must he be chaining?
must we be chaining?
must you be chaining?
must they be chaining? 	must I have chained?
must you have chained?
must he have chained?
must we have chained?
must you have chained?
must they have chained? 	must I have been chaining?
must you have been chaining?
must he have been chaining?
must we have been chaining?
must you have been chaining?
must they have been chaining? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I chain?
mustn't you chain?
mustn't he chain?
mustn't we chain?
mustn't you chain?
mustn't they chain? 	mustn't I be chaining?
mustn't you be chaining?
mustn't he be chaining?
mustn't we be chaining?
mustn't you be chaining?
mustn't they be chaining? 	mustn't I have chained?
mustn't you have chained?
mustn't he have chained?
mustn't we have chained?
mustn't you have chained?
mustn't they have chained? 	mustn't I have been chaining?
mustn't you have been chaining?
mustn't he have been chaining?
mustn't we have been chaining?
mustn't you have been chaining?
mustn't they have been chaining?