must chain
Regular verb: chain - chained- chained

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must chain
you must chain
she must chain
we must chain
you must chain
they must chain 	I must be chaining
you must be chaining
she must be chaining
we must be chaining
you must be chaining
they must be chaining	I must have chained
you must have chained
she 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
she 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 must not chain
you must not chain
she must not chain
we must not chain
you must not chain
they must not chain 	I must not be chaining
you must not be chaining
she must not be chaining
we must not be chaining
you must not be chaining
they must not be chaining	I must not have chained
you must not have chained
she must not have chained
we must not have chained
you must not have chained
they must not have chained	I must not have been chaining
you must not have been chaining
she must not have been chaining
we must not have been chaining
you must not have been chaining
they must not have been chaining	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I chain?
must you chain?
must she chain?
must we chain?
must you chain?
must they chain? 	must I be chaining?
must you be chaining?
must she be chaining?
must we be chaining?
must you be chaining?
must they be chaining? 	must I have chained?
must you have chained?
must she 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 she 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 	
must I not chain?
must you not chain?
must she not chain?
must we not chain?
must you not chain?
must they not chain? 	must I not be chaining?
must you not be chaining?
must she not be chaining?
must we not be chaining?
must you not be chaining?
must they not be chaining? 	must I not have chained?
must you not have chained?
must she not have chained?
must we not have chained?
must you not have chained?
must they not have chained? 	must I not have been chaining?
must you not have been chaining?
must she not have been chaining?
must we not have been chaining?
must you not have been chaining?
must they not have been chaining?