can prep
Regular verb: prep - preped- preped

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