must espy
Regular verb: espy - espied- espied

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must espy
you must espy
she must espy
we must espy
you must espy
they must espy 	I must be espying
you must be espying
she must be espying
we must be espying
you must be espying
they must be espying	I must have espied
you must have espied
she must have espied
we must have espied
you must have espied
they must have espied	I must have been espying
you must have been espying
she must have been espying
we must have been espying
you must have been espying
they must have been espying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't espy
you mustn't espy
she mustn't espy
we mustn't espy
you mustn't espy
they mustn't espy 	I mustn't be espying
you mustn't be espying
she mustn't be espying
we mustn't be espying
you mustn't be espying
they mustn't be espying	I mustn't have espied
you mustn't have espied
she mustn't have espied
we mustn't have espied
you mustn't have espied
they mustn't have espied	I mustn't have been espying
you mustn't have been espying
she mustn't have been espying
we mustn't have been espying
you mustn't have been espying
they mustn't have been espying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I espy?
must you espy?
must she espy?
must we espy?
must you espy?
must they espy? 	must I be espying?
must you be espying?
must she be espying?
must we be espying?
must you be espying?
must they be espying? 	must I have espied?
must you have espied?
must she have espied?
must we have espied?
must you have espied?
must they have espied? 	must I have been espying?
must you have been espying?
must she have been espying?
must we have been espying?
must you have been espying?
must they have been espying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I espy?
mustn't you espy?
mustn't she espy?
mustn't we espy?
mustn't you espy?
mustn't they espy? 	mustn't I be espying?
mustn't you be espying?
mustn't she be espying?
mustn't we be espying?
mustn't you be espying?
mustn't they be espying? 	mustn't I have espied?
mustn't you have espied?
mustn't she have espied?
mustn't we have espied?
mustn't you have espied?
mustn't they have espied? 	mustn't I have been espying?
mustn't you have been espying?
mustn't she have been espying?
mustn't we have been espying?
mustn't you have been espying?
mustn't they have been espying?