could roughhouse
Regular verb: roughhouse - roughhoused- roughhoused

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could roughhouse
you could roughhouse
she could roughhouse
we could roughhouse
you could roughhouse
they could roughhouse 	I could be roughhousing
you could be roughhousing
she could be roughhousing
we could be roughhousing
you could be roughhousing
they could be roughhousing	I could have roughhoused
you could have roughhoused
she could have roughhoused
we could have roughhoused
you could have roughhoused
they could have roughhoused	I could have been roughhousing
you could have been roughhousing
she could have been roughhousing
we could have been roughhousing
you could have been roughhousing
they could have been roughhousing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't roughhouse
you couldn't roughhouse
she couldn't roughhouse
we couldn't roughhouse
you couldn't roughhouse
they couldn't roughhouse 	I couldn't be roughhousing
you couldn't be roughhousing
she couldn't be roughhousing
we couldn't be roughhousing
you couldn't be roughhousing
they couldn't be roughhousing	I couldn't have roughhoused
you couldn't have roughhoused
she couldn't have roughhoused
we couldn't have roughhoused
you couldn't have roughhoused
they couldn't have roughhoused	I couldn't have been roughhousing
you couldn't have been roughhousing
she couldn't have been roughhousing
we couldn't have been roughhousing
you couldn't have been roughhousing
they couldn't have been roughhousing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I roughhouse?
could you roughhouse?
could she roughhouse?
could we roughhouse?
could you roughhouse?
could they roughhouse? 	could I be roughhousing?
could you be roughhousing?
could she be roughhousing?
could we be roughhousing?
could you be roughhousing?
could they be roughhousing? 	could I have roughhoused?
could you have roughhoused?
could she have roughhoused?
could we have roughhoused?
could you have roughhoused?
could they have roughhoused? 	could I have been roughhousing?
could you have been roughhousing?
could she have been roughhousing?
could we have been roughhousing?
could you have been roughhousing?
could they have been roughhousing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I roughhouse?
couldn't you roughhouse?
couldn't she roughhouse?
couldn't we roughhouse?
couldn't you roughhouse?
couldn't they roughhouse? 	couldn't I be roughhousing?
couldn't you be roughhousing?
couldn't she be roughhousing?
couldn't we be roughhousing?
couldn't you be roughhousing?
couldn't they be roughhousing? 	couldn't I have roughhoused?
couldn't you have roughhoused?
couldn't she have roughhoused?
couldn't we have roughhoused?
couldn't you have roughhoused?
couldn't they have roughhoused? 	couldn't I have been roughhousing?
couldn't you have been roughhousing?
couldn't she have been roughhousing?
couldn't we have been roughhousing?
couldn't you have been roughhousing?
couldn't they have been roughhousing?