must crunch
Regular verb: crunch - crunched- crunched

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must crunch
you must crunch
he must crunch
we must crunch
you must crunch
they must crunch 	I must be crunching
you must be crunching
he must be crunching
we must be crunching
you must be crunching
they must be crunching	I must have crunched
you must have crunched
he must have crunched
we must have crunched
you must have crunched
they must have crunched	I must have been crunching
you must have been crunching
he must have been crunching
we must have been crunching
you must have been crunching
they must have been crunching	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not crunch
you must not crunch
he must not crunch
we must not crunch
you must not crunch
they must not crunch 	I must not be crunching
you must not be crunching
he must not be crunching
we must not be crunching
you must not be crunching
they must not be crunching	I must not have crunched
you must not have crunched
he must not have crunched
we must not have crunched
you must not have crunched
they must not have crunched	I must not have been crunching
you must not have been crunching
he must not have been crunching
we must not have been crunching
you must not have been crunching
they must not have been crunching	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I crunch?
must you crunch?
must he crunch?
must we crunch?
must you crunch?
must they crunch? 	must I be crunching?
must you be crunching?
must he be crunching?
must we be crunching?
must you be crunching?
must they be crunching? 	must I have crunched?
must you have crunched?
must he have crunched?
must we have crunched?
must you have crunched?
must they have crunched? 	must I have been crunching?
must you have been crunching?
must he have been crunching?
must we have been crunching?
must you have been crunching?
must they have been crunching? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not crunch?
must you not crunch?
must he not crunch?
must we not crunch?
must you not crunch?
must they not crunch? 	must I not be crunching?
must you not be crunching?
must he not be crunching?
must we not be crunching?
must you not be crunching?
must they not be crunching? 	must I not have crunched?
must you not have crunched?
must he not have crunched?
must we not have crunched?
must you not have crunched?
must they not have crunched? 	must I not have been crunching?
must you not have been crunching?
must he not have been crunching?
must we not have been crunching?
must you not have been crunching?
must they not have been crunching?