can rock
Regular verb: rock - rocked- rocked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can rock
you can rock
he can rock
we can rock
you can rock
they can rock 	I can be rocking
you can be rocking
he can be rocking
we can be rocking
you can be rocking
they can be rocking	I can have rocked
you can have rocked
he can have rocked
we can have rocked
you can have rocked
they can have rocked	I can have been rocking
you can have been rocking
he can have been rocking
we can have been rocking
you can have been rocking
they can have been rocking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot rock
you cannot rock
he cannot rock
we cannot rock
you cannot rock
they cannot rock 	I cannot be rocking
you cannot be rocking
he cannot be rocking
we cannot be rocking
you cannot be rocking
they cannot be rocking	I cannot have rocked
you cannot have rocked
he cannot have rocked
we cannot have rocked
you cannot have rocked
they cannot have rocked	I cannot have been rocking
you cannot have been rocking
he cannot have been rocking
we cannot have been rocking
you cannot have been rocking
they cannot have been rocking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I rock?
can you rock?
can he rock?
can we rock?
can you rock?
can they rock? 	can I be rocking?
can you be rocking?
can he be rocking?
can we be rocking?
can you be rocking?
can they be rocking? 	can I have rocked?
can you have rocked?
can he have rocked?
can we have rocked?
can you have rocked?
can they have rocked? 	can I have been rocking?
can you have been rocking?
can he have been rocking?
can we have been rocking?
can you have been rocking?
can they have been rocking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not rock?
can you not rock?
can he not rock?
can we not rock?
can you not rock?
can they not rock? 	can I not be rocking?
can you not be rocking?
can he not be rocking?
can we not be rocking?
can you not be rocking?
can they not be rocking? 	can I not have rocked?
can you not have rocked?
can he not have rocked?
can we not have rocked?
can you not have rocked?
can they not have rocked? 	can I not have been rocking?
can you not have been rocking?
can he not have been rocking?
can we not have been rocking?
can you not have been rocking?
can they not have been rocking?