English verb conjugation
MUST ESPY

Regular verb: espy - espied - espied

Affirmation

Simple form	V-ing form
I must espy you must espy he must espy we must espy you must espy they must espy	I must be espying you must be espying he must be espying we must be espying you must be espying they must be espying
Perfect	V-ing perfect
I must have espied you must have espied he 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 he 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
I must not espy you must not espy he must not espy we must not espy you must not espy they must not espy	I must not be espying you must not be espying he must not be espying we must not be espying you must not be espying they must not be espying
Perfect	V-ing perfect
I must not have espied you must not have espied he must not have espied we must not have espied you must not have espied they must not have espied	I must not have been espying you must not have been espying he must not have been espying we must not have been espying you must not have been espying they must not have been espying

Interrogative form

Simple form	V-ing form
must I espy? must you espy? must he espy? must we espy? must you espy? must they espy?	must I be espying? must you be espying? must he be espying? must we be espying? must you be espying? must they be espying?
Perfect	V-ing perfect
must I have espied? must you have espied? must he 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 he 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
must I not espy? must you not espy? must he not espy? must we not espy? must you not espy? must they not espy?	must I not be espying? must you not be espying? must he not be espying? must we not be espying? must you not be espying? must they not be espying?
Perfect	V-ing perfect
must I not have espied? must you not have espied? must he not have espied? must we not have espied? must you not have espied? must they not have espied?	must I not have been espying? must you not have been espying? must he not have been espying? must we not have been espying? must you not have been espying? must they not have been espying?