I must pant you must pant he must pant we must pant you must pant they must pant
V-ing form
I must be panting you must be panting he must be panting we must be panting you must be panting they must be panting
Perfect
I must have panted you must have panted he must have panted we must have panted you must have panted they must have panted
V-ing perfect
I must have been panting you must have been panting he must have been panting we must have been panting you must have been panting they must have been panting
Negation
Simple form
I must not pant you must not pant he must not pant we must not pant you must not pant they must not pant
V-ing form
I must not be panting you must not be panting he must not be panting we must not be panting you must not be panting they must not be panting
Perfect
I must not have panted you must not have panted he must not have panted we must not have panted you must not have panted they must not have panted
V-ing perfect
I must not have been panting you must not have been panting he must not have been panting we must not have been panting you must not have been panting they must not have been panting
Interrogative form
Simple form
must I pant? must you pant? must he pant? must we pant? must you pant? must they pant?
V-ing form
must I be panting? must you be panting? must he be panting? must we be panting? must you be panting? must they be panting?
Perfect
must I have panted? must you have panted? must he have panted? must we have panted? must you have panted? must they have panted?
V-ing perfect
must I have been panting? must you have been panting? must he have been panting? must we have been panting? must you have been panting? must they have been panting?
Interro-negative form
Simple form
must I not pant? must you not pant? must he not pant? must we not pant? must you not pant? must they not pant?
V-ing form
must I not be panting? must you not be panting? must he not be panting? must we not be panting? must you not be panting? must they not be panting?
Perfect
must I not have panted? must you not have panted? must he not have panted? must we not have panted? must you not have panted? must they not have panted?
V-ing perfect
must I not have been panting? must you not have been panting? must he not have been panting? must we not have been panting? must you not have been panting? must they not have been panting?