I must ruminate you must ruminate he must ruminate we must ruminate you must ruminate they must ruminate
V-ing form
I must be ruminating you must be ruminating he must be ruminating we must be ruminating you must be ruminating they must be ruminating
Perfect
I must have ruminated you must have ruminated he must have ruminated we must have ruminated you must have ruminated they must have ruminated
V-ing perfect
I must have been ruminating you must have been ruminating he must have been ruminating we must have been ruminating you must have been ruminating they must have been ruminating
Negation
Simple form
I must not ruminate you must not ruminate he must not ruminate we must not ruminate you must not ruminate they must not ruminate
V-ing form
I must not be ruminating you must not be ruminating he must not be ruminating we must not be ruminating you must not be ruminating they must not be ruminating
Perfect
I must not have ruminated you must not have ruminated he must not have ruminated we must not have ruminated you must not have ruminated they must not have ruminated
V-ing perfect
I must not have been ruminating you must not have been ruminating he must not have been ruminating we must not have been ruminating you must not have been ruminating they must not have been ruminating
Interrogative form
Simple form
must I ruminate? must you ruminate? must he ruminate? must we ruminate? must you ruminate? must they ruminate?
V-ing form
must I be ruminating? must you be ruminating? must he be ruminating? must we be ruminating? must you be ruminating? must they be ruminating?
Perfect
must I have ruminated? must you have ruminated? must he have ruminated? must we have ruminated? must you have ruminated? must they have ruminated?
V-ing perfect
must I have been ruminating? must you have been ruminating? must he have been ruminating? must we have been ruminating? must you have been ruminating? must they have been ruminating?
Interro-negative form
Simple form
must I not ruminate? must you not ruminate? must he not ruminate? must we not ruminate? must you not ruminate? must they not ruminate?
V-ing form
must I not be ruminating? must you not be ruminating? must he not be ruminating? must we not be ruminating? must you not be ruminating? must they not be ruminating?
Perfect
must I not have ruminated? must you not have ruminated? must he not have ruminated? must we not have ruminated? must you not have ruminated? must they not have ruminated?
V-ing perfect
must I not have been ruminating? must you not have been ruminating? must he not have been ruminating? must we not have been ruminating? must you not have been ruminating? must they not have been ruminating?