I must canal you must canal she must canal we must canal you must canal they must canal
V-ing form
I must be canaling you must be canaling she must be canaling we must be canaling you must be canaling they must be canaling
Perfect
I must have canaled you must have canaled she must have canaled we must have canaled you must have canaled they must have canaled
V-ing perfect
I must have been canaling you must have been canaling she must have been canaling we must have been canaling you must have been canaling they must have been canaling
Negation
Simple form
I must not canal you must not canal she must not canal we must not canal you must not canal they must not canal
V-ing form
I must not be canaling you must not be canaling she must not be canaling we must not be canaling you must not be canaling they must not be canaling
Perfect
I must not have canaled you must not have canaled she must not have canaled we must not have canaled you must not have canaled they must not have canaled
V-ing perfect
I must not have been canaling you must not have been canaling she must not have been canaling we must not have been canaling you must not have been canaling they must not have been canaling
Interrogative form
Simple form
must I canal? must you canal? must she canal? must we canal? must you canal? must they canal?
V-ing form
must I be canaling? must you be canaling? must she be canaling? must we be canaling? must you be canaling? must they be canaling?
Perfect
must I have canaled? must you have canaled? must she have canaled? must we have canaled? must you have canaled? must they have canaled?
V-ing perfect
must I have been canaling? must you have been canaling? must she have been canaling? must we have been canaling? must you have been canaling? must they have been canaling?
Interro-negative form
Simple form
must I not canal? must you not canal? must she not canal? must we not canal? must you not canal? must they not canal?
V-ing form
must I not be canaling? must you not be canaling? must she not be canaling? must we not be canaling? must you not be canaling? must they not be canaling?
Perfect
must I not have canaled? must you not have canaled? must she not have canaled? must we not have canaled? must you not have canaled? must they not have canaled?
V-ing perfect
must I not have been canaling? must you not have been canaling? must she not have been canaling? must we not have been canaling? must you not have been canaling? must they not have been canaling?