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