must balance
Regular verb: balance - balanced- balanced

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must balance
you must balance
he must balance
we must balance
you must balance
they must balance 	I must be balancing
you must be balancing
he must be balancing
we must be balancing
you must be balancing
they must be balancing	I must have balanced
you must have balanced
he must have balanced
we must have balanced
you must have balanced
they must have balanced	I must have been balancing
you must have been balancing
he must have been balancing
we must have been balancing
you must have been balancing
they must have been balancing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not balance
you must not balance
he must not balance
we must not balance
you must not balance
they must not balance 	I must not be balancing
you must not be balancing
he must not be balancing
we must not be balancing
you must not be balancing
they must not be balancing	I must not have balanced
you must not have balanced
he must not have balanced
we must not have balanced
you must not have balanced
they must not have balanced	I must not have been balancing
you must not have been balancing
he must not have been balancing
we must not have been balancing
you must not have been balancing
they must not have been balancing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I balance?
must you balance?
must he balance?
must we balance?
must you balance?
must they balance? 	must I be balancing?
must you be balancing?
must he be balancing?
must we be balancing?
must you be balancing?
must they be balancing? 	must I have balanced?
must you have balanced?
must he have balanced?
must we have balanced?
must you have balanced?
must they have balanced? 	must I have been balancing?
must you have been balancing?
must he have been balancing?
must we have been balancing?
must you have been balancing?
must they have been balancing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not balance?
must you not balance?
must he not balance?
must we not balance?
must you not balance?
must they not balance? 	must I not be balancing?
must you not be balancing?
must he not be balancing?
must we not be balancing?
must you not be balancing?
must they not be balancing? 	must I not have balanced?
must you not have balanced?
must he not have balanced?
must we not have balanced?
must you not have balanced?
must they not have balanced? 	must I not have been balancing?
must you not have been balancing?
must he not have been balancing?
must we not have been balancing?
must you not have been balancing?
must they not have been balancing?