English verb conjugation
COULD ROUGHHOUSE

Regular verb: roughhouse - roughhoused - roughhoused

Affirmation

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