I must stink you must stink she must stink we must stink you must stink they must stink
V-ing form
I must be stinking you must be stinking she must be stinking we must be stinking you must be stinking they must be stinking
Perfect
I must have stunk you must have stunk she must have stunk we must have stunk you must have stunk they must have stunk
V-ing perfect
I must have been stinking you must have been stinking she must have been stinking we must have been stinking you must have been stinking they must have been stinking
Negation
Simple form
I must not stink you must not stink she must not stink we must not stink you must not stink they must not stink
V-ing form
I must not be stinking you must not be stinking she must not be stinking we must not be stinking you must not be stinking they must not be stinking
Perfect
I must not have stunk you must not have stunk she must not have stunk we must not have stunk you must not have stunk they must not have stunk
V-ing perfect
I must not have been stinking you must not have been stinking she must not have been stinking we must not have been stinking you must not have been stinking they must not have been stinking
Interrogative form
Simple form
must I stink? must you stink? must she stink? must we stink? must you stink? must they stink?
V-ing form
must I be stinking? must you be stinking? must she be stinking? must we be stinking? must you be stinking? must they be stinking?
Perfect
must I have stunk? must you have stunk? must she have stunk? must we have stunk? must you have stunk? must they have stunk?
V-ing perfect
must I have been stinking? must you have been stinking? must she have been stinking? must we have been stinking? must you have been stinking? must they have been stinking?
Interro-negative form
Simple form
must I not stink? must you not stink? must she not stink? must we not stink? must you not stink? must they not stink?
V-ing form
must I not be stinking? must you not be stinking? must she not be stinking? must we not be stinking? must you not be stinking? must they not be stinking?
Perfect
must I not have stunk? must you not have stunk? must she not have stunk? must we not have stunk? must you not have stunk? must they not have stunk?
V-ing perfect
must I not have been stinking? must you not have been stinking? must she not have been stinking? must we not have been stinking? must you not have been stinking? must they not have been stinking?