must kneecap
Regular verb: kneecap - kneecapped- kneecapped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must kneecap
you must kneecap
he must kneecap
we must kneecap
you must kneecap
they must kneecap 	I must be kneecapping
you must be kneecapping
he must be kneecapping
we must be kneecapping
you must be kneecapping
they must be kneecapping	I must have kneecapped
you must have kneecapped
he must have kneecapped
we must have kneecapped
you must have kneecapped
they must have kneecapped	I must have been kneecapping
you must have been kneecapping
he must have been kneecapping
we must have been kneecapping
you must have been kneecapping
they must have been kneecapping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't kneecap
you mustn't kneecap
he mustn't kneecap
we mustn't kneecap
you mustn't kneecap
they mustn't kneecap 	I mustn't be kneecapping
you mustn't be kneecapping
he mustn't be kneecapping
we mustn't be kneecapping
you mustn't be kneecapping
they mustn't be kneecapping	I mustn't have kneecapped
you mustn't have kneecapped
he mustn't have kneecapped
we mustn't have kneecapped
you mustn't have kneecapped
they mustn't have kneecapped	I mustn't have been kneecapping
you mustn't have been kneecapping
he mustn't have been kneecapping
we mustn't have been kneecapping
you mustn't have been kneecapping
they mustn't have been kneecapping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I kneecap?
must you kneecap?
must he kneecap?
must we kneecap?
must you kneecap?
must they kneecap? 	must I be kneecapping?
must you be kneecapping?
must he be kneecapping?
must we be kneecapping?
must you be kneecapping?
must they be kneecapping? 	must I have kneecapped?
must you have kneecapped?
must he have kneecapped?
must we have kneecapped?
must you have kneecapped?
must they have kneecapped? 	must I have been kneecapping?
must you have been kneecapping?
must he have been kneecapping?
must we have been kneecapping?
must you have been kneecapping?
must they have been kneecapping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I kneecap?
mustn't you kneecap?
mustn't he kneecap?
mustn't we kneecap?
mustn't you kneecap?
mustn't they kneecap? 	mustn't I be kneecapping?
mustn't you be kneecapping?
mustn't he be kneecapping?
mustn't we be kneecapping?
mustn't you be kneecapping?
mustn't they be kneecapping? 	mustn't I have kneecapped?
mustn't you have kneecapped?
mustn't he have kneecapped?
mustn't we have kneecapped?
mustn't you have kneecapped?
mustn't they have kneecapped? 	mustn't I have been kneecapping?
mustn't you have been kneecapping?
mustn't he have been kneecapping?
mustn't we have been kneecapping?
mustn't you have been kneecapping?
mustn't they have been kneecapping?