English verb conjugation
CAN CRUNCH

Regular verb: crunch - crunched - crunched

Affirmation

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

Negation

Simple form	V-ing form
I can't crunch you can't crunch he can't crunch we can't crunch you can't crunch they can't crunch	I can't be crunching you can't be crunching he can't be crunching we can't be crunching you can't be crunching they can't be crunching
Perfect	V-ing perfect
I can't have crunched you can't have crunched he can't have crunched we can't have crunched you can't have crunched they can't have crunched	I can't have been crunching you can't have been crunching he can't have been crunching we can't have been crunching you can't have been crunching they can't have been crunching

Interrogative form

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

Interro-negative form

Simple form	V-ing form
can't I crunch? can't you crunch? can't he crunch? can't we crunch? can't you crunch? can't they crunch?	can't I be crunching? can't you be crunching? can't he be crunching? can't we be crunching? can't you be crunching? can't they be crunching?
Perfect	V-ing perfect
can't I have crunched? can't you have crunched? can't he have crunched? can't we have crunched? can't you have crunched? can't they have crunched?	can't I have been crunching? can't you have been crunching? can't he have been crunching? can't we have been crunching? can't you have been crunching? can't they have been crunching?