must moan
Regular verb: moan - moaned- moaned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must moan
you must moan
he must moan
we must moan
you must moan
they must moan 	I must be moaning
you must be moaning
he must be moaning
we must be moaning
you must be moaning
they must be moaning	I must have moaned
you must have moaned
he must have moaned
we must have moaned
you must have moaned
they must have moaned	I must have been moaning
you must have been moaning
he must have been moaning
we must have been moaning
you must have been moaning
they must have been moaning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not moan
you must not moan
he must not moan
we must not moan
you must not moan
they must not moan 	I must not be moaning
you must not be moaning
he must not be moaning
we must not be moaning
you must not be moaning
they must not be moaning	I must not have moaned
you must not have moaned
he must not have moaned
we must not have moaned
you must not have moaned
they must not have moaned	I must not have been moaning
you must not have been moaning
he must not have been moaning
we must not have been moaning
you must not have been moaning
they must not have been moaning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I moan?
must you moan?
must he moan?
must we moan?
must you moan?
must they moan? 	must I be moaning?
must you be moaning?
must he be moaning?
must we be moaning?
must you be moaning?
must they be moaning? 	must I have moaned?
must you have moaned?
must he have moaned?
must we have moaned?
must you have moaned?
must they have moaned? 	must I have been moaning?
must you have been moaning?
must he have been moaning?
must we have been moaning?
must you have been moaning?
must they have been moaning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not moan?
must you not moan?
must he not moan?
must we not moan?
must you not moan?
must they not moan? 	must I not be moaning?
must you not be moaning?
must he not be moaning?
must we not be moaning?
must you not be moaning?
must they not be moaning? 	must I not have moaned?
must you not have moaned?
must he not have moaned?
must we not have moaned?
must you not have moaned?
must they not have moaned? 	must I not have been moaning?
must you not have been moaning?
must he not have been moaning?
must we not have been moaning?
must you not have been moaning?
must they not have been moaning?