can frock
Regular verb: frock - frocked- frocked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can frock
you can frock
she can frock
we can frock
you can frock
they can frock 	I can be frocking
you can be frocking
she can be frocking
we can be frocking
you can be frocking
they can be frocking	I can have frocked
you can have frocked
she can have frocked
we can have frocked
you can have frocked
they can have frocked	I can have been frocking
you can have been frocking
she can have been frocking
we can have been frocking
you can have been frocking
they can have been frocking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot frock
you cannot frock
she cannot frock
we cannot frock
you cannot frock
they cannot frock 	I cannot be frocking
you cannot be frocking
she cannot be frocking
we cannot be frocking
you cannot be frocking
they cannot be frocking	I cannot have frocked
you cannot have frocked
she cannot have frocked
we cannot have frocked
you cannot have frocked
they cannot have frocked	I cannot have been frocking
you cannot have been frocking
she cannot have been frocking
we cannot have been frocking
you cannot have been frocking
they cannot have been frocking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I frock?
can you frock?
can she frock?
can we frock?
can you frock?
can they frock? 	can I be frocking?
can you be frocking?
can she be frocking?
can we be frocking?
can you be frocking?
can they be frocking? 	can I have frocked?
can you have frocked?
can she have frocked?
can we have frocked?
can you have frocked?
can they have frocked? 	can I have been frocking?
can you have been frocking?
can she have been frocking?
can we have been frocking?
can you have been frocking?
can they have been frocking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not frock?
can you not frock?
can she not frock?
can we not frock?
can you not frock?
can they not frock? 	can I not be frocking?
can you not be frocking?
can she not be frocking?
can we not be frocking?
can you not be frocking?
can they not be frocking? 	can I not have frocked?
can you not have frocked?
can she not have frocked?
can we not have frocked?
can you not have frocked?
can they not have frocked? 	can I not have been frocking?
can you not have been frocking?
can she not have been frocking?
can we not have been frocking?
can you not have been frocking?
can they not have been frocking?