I must patch you must patch he must patch we must patch you must patch they must patch
V-ing form
I must be patching you must be patching he must be patching we must be patching you must be patching they must be patching
Perfect
I must have patched you must have patched he must have patched we must have patched you must have patched they must have patched
V-ing perfect
I must have been patching you must have been patching he must have been patching we must have been patching you must have been patching they must have been patching
Negation
Simple form
I must not patch you must not patch he must not patch we must not patch you must not patch they must not patch
V-ing form
I must not be patching you must not be patching he must not be patching we must not be patching you must not be patching they must not be patching
Perfect
I must not have patched you must not have patched he must not have patched we must not have patched you must not have patched they must not have patched
V-ing perfect
I must not have been patching you must not have been patching he must not have been patching we must not have been patching you must not have been patching they must not have been patching
Interrogative form
Simple form
must I patch? must you patch? must he patch? must we patch? must you patch? must they patch?
V-ing form
must I be patching? must you be patching? must he be patching? must we be patching? must you be patching? must they be patching?
Perfect
must I have patched? must you have patched? must he have patched? must we have patched? must you have patched? must they have patched?
V-ing perfect
must I have been patching? must you have been patching? must he have been patching? must we have been patching? must you have been patching? must they have been patching?
Interro-negative form
Simple form
must I not patch? must you not patch? must he not patch? must we not patch? must you not patch? must they not patch?
V-ing form
must I not be patching? must you not be patching? must he not be patching? must we not be patching? must you not be patching? must they not be patching?
Perfect
must I not have patched? must you not have patched? must he not have patched? must we not have patched? must you not have patched? must they not have patched?
V-ing perfect
must I not have been patching? must you not have been patching? must he not have been patching? must we not have been patching? must you not have been patching? must they not have been patching?