must lacinate
Regular verb: lacinate - lacinated- lacinated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must lacinate
you must lacinate
he must lacinate
we must lacinate
you must lacinate
they must lacinate 	I must be lacinating
you must be lacinating
he must be lacinating
we must be lacinating
you must be lacinating
they must be lacinating	I must have lacinated
you must have lacinated
he must have lacinated
we must have lacinated
you must have lacinated
they must have lacinated	I must have been lacinating
you must have been lacinating
he must have been lacinating
we must have been lacinating
you must have been lacinating
they must have been lacinating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't lacinate
you mustn't lacinate
he mustn't lacinate
we mustn't lacinate
you mustn't lacinate
they mustn't lacinate 	I mustn't be lacinating
you mustn't be lacinating
he mustn't be lacinating
we mustn't be lacinating
you mustn't be lacinating
they mustn't be lacinating	I mustn't have lacinated
you mustn't have lacinated
he mustn't have lacinated
we mustn't have lacinated
you mustn't have lacinated
they mustn't have lacinated	I mustn't have been lacinating
you mustn't have been lacinating
he mustn't have been lacinating
we mustn't have been lacinating
you mustn't have been lacinating
they mustn't have been lacinating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I lacinate?
must you lacinate?
must he lacinate?
must we lacinate?
must you lacinate?
must they lacinate? 	must I be lacinating?
must you be lacinating?
must he be lacinating?
must we be lacinating?
must you be lacinating?
must they be lacinating? 	must I have lacinated?
must you have lacinated?
must he have lacinated?
must we have lacinated?
must you have lacinated?
must they have lacinated? 	must I have been lacinating?
must you have been lacinating?
must he have been lacinating?
must we have been lacinating?
must you have been lacinating?
must they have been lacinating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I lacinate?
mustn't you lacinate?
mustn't he lacinate?
mustn't we lacinate?
mustn't you lacinate?
mustn't they lacinate? 	mustn't I be lacinating?
mustn't you be lacinating?
mustn't he be lacinating?
mustn't we be lacinating?
mustn't you be lacinating?
mustn't they be lacinating? 	mustn't I have lacinated?
mustn't you have lacinated?
mustn't he have lacinated?
mustn't we have lacinated?
mustn't you have lacinated?
mustn't they have lacinated? 	mustn't I have been lacinating?
mustn't you have been lacinating?
mustn't he have been lacinating?
mustn't we have been lacinating?
mustn't you have been lacinating?
mustn't they have been lacinating?