must ease
Regular verb: ease - eased- eased

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must ease
you must ease
he must ease
we must ease
you must ease
they must ease 	I must be easing
you must be easing
he must be easing
we must be easing
you must be easing
they must be easing	I must have eased
you must have eased
he must have eased
we must have eased
you must have eased
they must have eased	I must have been easing
you must have been easing
he must have been easing
we must have been easing
you must have been easing
they must have been easing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not ease
you must not ease
he must not ease
we must not ease
you must not ease
they must not ease 	I must not be easing
you must not be easing
he must not be easing
we must not be easing
you must not be easing
they must not be easing	I must not have eased
you must not have eased
he must not have eased
we must not have eased
you must not have eased
they must not have eased	I must not have been easing
you must not have been easing
he must not have been easing
we must not have been easing
you must not have been easing
they must not have been easing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I ease?
must you ease?
must he ease?
must we ease?
must you ease?
must they ease? 	must I be easing?
must you be easing?
must he be easing?
must we be easing?
must you be easing?
must they be easing? 	must I have eased?
must you have eased?
must he have eased?
must we have eased?
must you have eased?
must they have eased? 	must I have been easing?
must you have been easing?
must he have been easing?
must we have been easing?
must you have been easing?
must they have been easing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not ease?
must you not ease?
must he not ease?
must we not ease?
must you not ease?
must they not ease? 	must I not be easing?
must you not be easing?
must he not be easing?
must we not be easing?
must you not be easing?
must they not be easing? 	must I not have eased?
must you not have eased?
must he not have eased?
must we not have eased?
must you not have eased?
must they not have eased? 	must I not have been easing?
must you not have been easing?
must he not have been easing?
must we not have been easing?
must you not have been easing?
must they not have been easing?