must effect
Regular verb: effect - effected- effected

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must effect
you must effect
she must effect
we must effect
you must effect
they must effect 	I must be effecting
you must be effecting
she must be effecting
we must be effecting
you must be effecting
they must be effecting	I must have effected
you must have effected
she must have effected
we must have effected
you must have effected
they must have effected	I must have been effecting
you must have been effecting
she must have been effecting
we must have been effecting
you must have been effecting
they must have been effecting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not effect
you must not effect
she must not effect
we must not effect
you must not effect
they must not effect 	I must not be effecting
you must not be effecting
she must not be effecting
we must not be effecting
you must not be effecting
they must not be effecting	I must not have effected
you must not have effected
she must not have effected
we must not have effected
you must not have effected
they must not have effected	I must not have been effecting
you must not have been effecting
she must not have been effecting
we must not have been effecting
you must not have been effecting
they must not have been effecting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I effect?
must you effect?
must she effect?
must we effect?
must you effect?
must they effect? 	must I be effecting?
must you be effecting?
must she be effecting?
must we be effecting?
must you be effecting?
must they be effecting? 	must I have effected?
must you have effected?
must she have effected?
must we have effected?
must you have effected?
must they have effected? 	must I have been effecting?
must you have been effecting?
must she have been effecting?
must we have been effecting?
must you have been effecting?
must they have been effecting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not effect?
must you not effect?
must she not effect?
must we not effect?
must you not effect?
must they not effect? 	must I not be effecting?
must you not be effecting?
must she not be effecting?
must we not be effecting?
must you not be effecting?
must they not be effecting? 	must I not have effected?
must you not have effected?
must she not have effected?
must we not have effected?
must you not have effected?
must they not have effected? 	must I not have been effecting?
must you not have been effecting?
must she not have been effecting?
must we not have been effecting?
must you not have been effecting?
must they not have been effecting?