English verb conjugation
CAN PREP

Regular verb: prep - preped - preped

Affirmation

Simple form	V-ing form
I can prep you can prep he can prep we can prep you can prep they can prep	I can be preping you can be preping he can be preping we can be preping you can be preping they can be preping
Perfect	V-ing perfect
I can have preped you can have preped he can have preped we can have preped you can have preped they can have preped	I can have been preping you can have been preping he can have been preping we can have been preping you can have been preping they can have been preping

Negation

Simple form	V-ing form
I can't prep you can't prep he can't prep we can't prep you can't prep they can't prep	I can't be preping you can't be preping he can't be preping we can't be preping you can't be preping they can't be preping
Perfect	V-ing perfect
I can't have preped you can't have preped he can't have preped we can't have preped you can't have preped they can't have preped	I can't have been preping you can't have been preping he can't have been preping we can't have been preping you can't have been preping they can't have been preping

Interrogative form

Simple form	V-ing form
can I prep? can you prep? can he prep? can we prep? can you prep? can they prep?	can I be preping? can you be preping? can he be preping? can we be preping? can you be preping? can they be preping?
Perfect	V-ing perfect
can I have preped? can you have preped? can he have preped? can we have preped? can you have preped? can they have preped?	can I have been preping? can you have been preping? can he have been preping? can we have been preping? can you have been preping? can they have been preping?

Interro-negative form

Simple form	V-ing form
can't I prep? can't you prep? can't he prep? can't we prep? can't you prep? can't they prep?	can't I be preping? can't you be preping? can't he be preping? can't we be preping? can't you be preping? can't they be preping?
Perfect	V-ing perfect
can't I have preped? can't you have preped? can't he have preped? can't we have preped? can't you have preped? can't they have preped?	can't I have been preping? can't you have been preping? can't he have been preping? can't we have been preping? can't you have been preping? can't they have been preping?