I must circle you must circle he must circle we must circle you must circle they must circle
V-ing form
I must be circling you must be circling he must be circling we must be circling you must be circling they must be circling
Perfect
I must have circled you must have circled he must have circled we must have circled you must have circled they must have circled
V-ing perfect
I must have been circling you must have been circling he must have been circling we must have been circling you must have been circling they must have been circling
Negation
Simple form
I must not circle you must not circle he must not circle we must not circle you must not circle they must not circle
V-ing form
I must not be circling you must not be circling he must not be circling we must not be circling you must not be circling they must not be circling
Perfect
I must not have circled you must not have circled he must not have circled we must not have circled you must not have circled they must not have circled
V-ing perfect
I must not have been circling you must not have been circling he must not have been circling we must not have been circling you must not have been circling they must not have been circling
Interrogative form
Simple form
must I circle? must you circle? must he circle? must we circle? must you circle? must they circle?
V-ing form
must I be circling? must you be circling? must he be circling? must we be circling? must you be circling? must they be circling?
Perfect
must I have circled? must you have circled? must he have circled? must we have circled? must you have circled? must they have circled?
V-ing perfect
must I have been circling? must you have been circling? must he have been circling? must we have been circling? must you have been circling? must they have been circling?
Interro-negative form
Simple form
must I not circle? must you not circle? must he not circle? must we not circle? must you not circle? must they not circle?
V-ing form
must I not be circling? must you not be circling? must he not be circling? must we not be circling? must you not be circling? must they not be circling?
Perfect
must I not have circled? must you not have circled? must he not have circled? must we not have circled? must you not have circled? must they not have circled?
V-ing perfect
must I not have been circling? must you not have been circling? must he not have been circling? must we not have been circling? must you not have been circling? must they not have been circling?