must pace
Regular verb: pace - paced- paced

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must pace
you must pace
he must pace
we must pace
you must pace
they must pace 	I must be pacing
you must be pacing
he must be pacing
we must be pacing
you must be pacing
they must be pacing	I must have paced
you must have paced
he must have paced
we must have paced
you must have paced
they must have paced	I must have been pacing
you must have been pacing
he must have been pacing
we must have been pacing
you must have been pacing
they must have been pacing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not pace
you must not pace
he must not pace
we must not pace
you must not pace
they must not pace 	I must not be pacing
you must not be pacing
he must not be pacing
we must not be pacing
you must not be pacing
they must not be pacing	I must not have paced
you must not have paced
he must not have paced
we must not have paced
you must not have paced
they must not have paced	I must not have been pacing
you must not have been pacing
he must not have been pacing
we must not have been pacing
you must not have been pacing
they must not have been pacing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I pace?
must you pace?
must he pace?
must we pace?
must you pace?
must they pace? 	must I be pacing?
must you be pacing?
must he be pacing?
must we be pacing?
must you be pacing?
must they be pacing? 	must I have paced?
must you have paced?
must he have paced?
must we have paced?
must you have paced?
must they have paced? 	must I have been pacing?
must you have been pacing?
must he have been pacing?
must we have been pacing?
must you have been pacing?
must they have been pacing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not pace?
must you not pace?
must he not pace?
must we not pace?
must you not pace?
must they not pace? 	must I not be pacing?
must you not be pacing?
must he not be pacing?
must we not be pacing?
must you not be pacing?
must they not be pacing? 	must I not have paced?
must you not have paced?
must he not have paced?
must we not have paced?
must you not have paced?
must they not have paced? 	must I not have been pacing?
must you not have been pacing?
must he not have been pacing?
must we not have been pacing?
must you not have been pacing?
must they not have been pacing?