must underscore
Regular verb: underscore - underscored- underscored

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must underscore
you must underscore
she must underscore
we must underscore
you must underscore
they must underscore 	I must be underscoring
you must be underscoring
she must be underscoring
we must be underscoring
you must be underscoring
they must be underscoring	I must have underscored
you must have underscored
she must have underscored
we must have underscored
you must have underscored
they must have underscored	I must have been underscoring
you must have been underscoring
she must have been underscoring
we must have been underscoring
you must have been underscoring
they must have been underscoring	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not underscore
you must not underscore
she must not underscore
we must not underscore
you must not underscore
they must not underscore 	I must not be underscoring
you must not be underscoring
she must not be underscoring
we must not be underscoring
you must not be underscoring
they must not be underscoring	I must not have underscored
you must not have underscored
she must not have underscored
we must not have underscored
you must not have underscored
they must not have underscored	I must not have been underscoring
you must not have been underscoring
she must not have been underscoring
we must not have been underscoring
you must not have been underscoring
they must not have been underscoring	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I underscore?
must you underscore?
must she underscore?
must we underscore?
must you underscore?
must they underscore? 	must I be underscoring?
must you be underscoring?
must she be underscoring?
must we be underscoring?
must you be underscoring?
must they be underscoring? 	must I have underscored?
must you have underscored?
must she have underscored?
must we have underscored?
must you have underscored?
must they have underscored? 	must I have been underscoring?
must you have been underscoring?
must she have been underscoring?
must we have been underscoring?
must you have been underscoring?
must they have been underscoring? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not underscore?
must you not underscore?
must she not underscore?
must we not underscore?
must you not underscore?
must they not underscore? 	must I not be underscoring?
must you not be underscoring?
must she not be underscoring?
must we not be underscoring?
must you not be underscoring?
must they not be underscoring? 	must I not have underscored?
must you not have underscored?
must she not have underscored?
must we not have underscored?
must you not have underscored?
must they not have underscored? 	must I not have been underscoring?
must you not have been underscoring?
must she not have been underscoring?
must we not have been underscoring?
must you not have been underscoring?
must they not have been underscoring?