English verb conjugation
MUST CRUNCH

Regular verb: crunch - crunched - crunched

Affirmation

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