English verb conjugation
COULD GROUSE

Regular verb: grouse - groused - groused

Affirmation

Simple form	V-ing form
I could grouse you could grouse he could grouse we could grouse you could grouse they could grouse	I could be grousing you could be grousing he could be grousing we could be grousing you could be grousing they could be grousing
Perfect	V-ing perfect
I could have groused you could have groused he could have groused we could have groused you could have groused they could have groused	I could have been grousing you could have been grousing he could have been grousing we could have been grousing you could have been grousing they could have been grousing

Negation

Simple form	V-ing form
I could not grouse you could not grouse he could not grouse we could not grouse you could not grouse they could not grouse	I could not be grousing you could not be grousing he could not be grousing we could not be grousing you could not be grousing they could not be grousing
Perfect	V-ing perfect
I could not have groused you could not have groused he could not have groused we could not have groused you could not have groused they could not have groused	I could not have been grousing you could not have been grousing he could not have been grousing we could not have been grousing you could not have been grousing they could not have been grousing

Interrogative form

Simple form	V-ing form
could I grouse? could you grouse? could he grouse? could we grouse? could you grouse? could they grouse?	could I be grousing? could you be grousing? could he be grousing? could we be grousing? could you be grousing? could they be grousing?
Perfect	V-ing perfect
could I have groused? could you have groused? could he have groused? could we have groused? could you have groused? could they have groused?	could I have been grousing? could you have been grousing? could he have been grousing? could we have been grousing? could you have been grousing? could they have been grousing?

Interro-negative form

Simple form	V-ing form
could I not grouse? could you not grouse? could he not grouse? could we not grouse? could you not grouse? could they not grouse?	could I not be grousing? could you not be grousing? could he not be grousing? could we not be grousing? could you not be grousing? could they not be grousing?
Perfect	V-ing perfect
could I not have groused? could you not have groused? could he not have groused? could we not have groused? could you not have groused? could they not have groused?	could I not have been grousing? could you not have been grousing? could he not have been grousing? could we not have been grousing? could you not have been grousing? could they not have been grousing?