must phase
Regular verb: phase - phased- phased

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must phase
you must phase
she must phase
we must phase
you must phase
they must phase 	I must be phasing
you must be phasing
she must be phasing
we must be phasing
you must be phasing
they must be phasing	I must have phased
you must have phased
she must have phased
we must have phased
you must have phased
they must have phased	I must have been phasing
you must have been phasing
she must have been phasing
we must have been phasing
you must have been phasing
they must have been phasing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not phase
you must not phase
she must not phase
we must not phase
you must not phase
they must not phase 	I must not be phasing
you must not be phasing
she must not be phasing
we must not be phasing
you must not be phasing
they must not be phasing	I must not have phased
you must not have phased
she must not have phased
we must not have phased
you must not have phased
they must not have phased	I must not have been phasing
you must not have been phasing
she must not have been phasing
we must not have been phasing
you must not have been phasing
they must not have been phasing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I phase?
must you phase?
must she phase?
must we phase?
must you phase?
must they phase? 	must I be phasing?
must you be phasing?
must she be phasing?
must we be phasing?
must you be phasing?
must they be phasing? 	must I have phased?
must you have phased?
must she have phased?
must we have phased?
must you have phased?
must they have phased? 	must I have been phasing?
must you have been phasing?
must she have been phasing?
must we have been phasing?
must you have been phasing?
must they have been phasing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not phase?
must you not phase?
must she not phase?
must we not phase?
must you not phase?
must they not phase? 	must I not be phasing?
must you not be phasing?
must she not be phasing?
must we not be phasing?
must you not be phasing?
must they not be phasing? 	must I not have phased?
must you not have phased?
must she not have phased?
must we not have phased?
must you not have phased?
must they not have phased? 	must I not have been phasing?
must you not have been phasing?
must she not have been phasing?
must we not have been phasing?
must you not have been phasing?
must they not have been phasing?