must decoy
Regular verb: decoy - decoyed- decoyed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must decoy
you must decoy
she must decoy
we must decoy
you must decoy
they must decoy 	I must be decoying
you must be decoying
she must be decoying
we must be decoying
you must be decoying
they must be decoying	I must have decoyed
you must have decoyed
she must have decoyed
we must have decoyed
you must have decoyed
they must have decoyed	I must have been decoying
you must have been decoying
she must have been decoying
we must have been decoying
you must have been decoying
they must have been decoying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not decoy
you must not decoy
she must not decoy
we must not decoy
you must not decoy
they must not decoy 	I must not be decoying
you must not be decoying
she must not be decoying
we must not be decoying
you must not be decoying
they must not be decoying	I must not have decoyed
you must not have decoyed
she must not have decoyed
we must not have decoyed
you must not have decoyed
they must not have decoyed	I must not have been decoying
you must not have been decoying
she must not have been decoying
we must not have been decoying
you must not have been decoying
they must not have been decoying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I decoy?
must you decoy?
must she decoy?
must we decoy?
must you decoy?
must they decoy? 	must I be decoying?
must you be decoying?
must she be decoying?
must we be decoying?
must you be decoying?
must they be decoying? 	must I have decoyed?
must you have decoyed?
must she have decoyed?
must we have decoyed?
must you have decoyed?
must they have decoyed? 	must I have been decoying?
must you have been decoying?
must she have been decoying?
must we have been decoying?
must you have been decoying?
must they have been decoying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not decoy?
must you not decoy?
must she not decoy?
must we not decoy?
must you not decoy?
must they not decoy? 	must I not be decoying?
must you not be decoying?
must she not be decoying?
must we not be decoying?
must you not be decoying?
must they not be decoying? 	must I not have decoyed?
must you not have decoyed?
must she not have decoyed?
must we not have decoyed?
must you not have decoyed?
must they not have decoyed? 	must I not have been decoying?
must you not have been decoying?
must she not have been decoying?
must we not have been decoying?
must you not have been decoying?
must they not have been decoying?