must release
Regular verb: release - released- released

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must release
you must release
she must release
we must release
you must release
they must release 	I must be releasing
you must be releasing
she must be releasing
we must be releasing
you must be releasing
they must be releasing	I must have released
you must have released
she must have released
we must have released
you must have released
they must have released	I must have been releasing
you must have been releasing
she must have been releasing
we must have been releasing
you must have been releasing
they must have been releasing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not release
you must not release
she must not release
we must not release
you must not release
they must not release 	I must not be releasing
you must not be releasing
she must not be releasing
we must not be releasing
you must not be releasing
they must not be releasing	I must not have released
you must not have released
she must not have released
we must not have released
you must not have released
they must not have released	I must not have been releasing
you must not have been releasing
she must not have been releasing
we must not have been releasing
you must not have been releasing
they must not have been releasing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I release?
must you release?
must she release?
must we release?
must you release?
must they release? 	must I be releasing?
must you be releasing?
must she be releasing?
must we be releasing?
must you be releasing?
must they be releasing? 	must I have released?
must you have released?
must she have released?
must we have released?
must you have released?
must they have released? 	must I have been releasing?
must you have been releasing?
must she have been releasing?
must we have been releasing?
must you have been releasing?
must they have been releasing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not release?
must you not release?
must she not release?
must we not release?
must you not release?
must they not release? 	must I not be releasing?
must you not be releasing?
must she not be releasing?
must we not be releasing?
must you not be releasing?
must they not be releasing? 	must I not have released?
must you not have released?
must she not have released?
must we not have released?
must you not have released?
must they not have released? 	must I not have been releasing?
must you not have been releasing?
must she not have been releasing?
must we not have been releasing?
must you not have been releasing?
must they not have been releasing?