I could bruit you could bruit she could bruit we could bruit you could bruit they could bruit
V-ing form
I could be bruiting you could be bruiting she could be bruiting we could be bruiting you could be bruiting they could be bruiting
Perfect
I could have bruited you could have bruited she could have bruited we could have bruited you could have bruited they could have bruited
V-ing perfect
I could have been bruiting you could have been bruiting she could have been bruiting we could have been bruiting you could have been bruiting they could have been bruiting
Negation
Simple form
I couldn't bruit you couldn't bruit she couldn't bruit we couldn't bruit you couldn't bruit they couldn't bruit
V-ing form
I couldn't be bruiting you couldn't be bruiting she couldn't be bruiting we couldn't be bruiting you couldn't be bruiting they couldn't be bruiting
Perfect
I couldn't have bruited you couldn't have bruited she couldn't have bruited we couldn't have bruited you couldn't have bruited they couldn't have bruited
V-ing perfect
I couldn't have been bruiting you couldn't have been bruiting she couldn't have been bruiting we couldn't have been bruiting you couldn't have been bruiting they couldn't have been bruiting
Interrogative form
Simple form
could I bruit? could you bruit? could she bruit? could we bruit? could you bruit? could they bruit?
V-ing form
could I be bruiting? could you be bruiting? could she be bruiting? could we be bruiting? could you be bruiting? could they be bruiting?
Perfect
could I have bruited? could you have bruited? could she have bruited? could we have bruited? could you have bruited? could they have bruited?
V-ing perfect
could I have been bruiting? could you have been bruiting? could she have been bruiting? could we have been bruiting? could you have been bruiting? could they have been bruiting?
Interro-negative form
Simple form
couldn't I bruit? couldn't you bruit? couldn't she bruit? couldn't we bruit? couldn't you bruit? couldn't they bruit?
V-ing form
couldn't I be bruiting? couldn't you be bruiting? couldn't she be bruiting? couldn't we be bruiting? couldn't you be bruiting? couldn't they be bruiting?
Perfect
couldn't I have bruited? couldn't you have bruited? couldn't she have bruited? couldn't we have bruited? couldn't you have bruited? couldn't they have bruited?
V-ing perfect
couldn't I have been bruiting? couldn't you have been bruiting? couldn't she have been bruiting? couldn't we have been bruiting? couldn't you have been bruiting? couldn't they have been bruiting?