I could unbridle you could unbridle he could unbridle we could unbridle you could unbridle they could unbridle
V-ing form
I could be unbridling you could be unbridling he could be unbridling we could be unbridling you could be unbridling they could be unbridling
Perfect
I could have unbridled you could have unbridled he could have unbridled we could have unbridled you could have unbridled they could have unbridled
V-ing perfect
I could have been unbridling you could have been unbridling he could have been unbridling we could have been unbridling you could have been unbridling they could have been unbridling
Negation
Simple form
I couldn't unbridle you couldn't unbridle he couldn't unbridle we couldn't unbridle you couldn't unbridle they couldn't unbridle
V-ing form
I couldn't be unbridling you couldn't be unbridling he couldn't be unbridling we couldn't be unbridling you couldn't be unbridling they couldn't be unbridling
Perfect
I couldn't have unbridled you couldn't have unbridled he couldn't have unbridled we couldn't have unbridled you couldn't have unbridled they couldn't have unbridled
V-ing perfect
I couldn't have been unbridling you couldn't have been unbridling he couldn't have been unbridling we couldn't have been unbridling you couldn't have been unbridling they couldn't have been unbridling
Interrogative form
Simple form
could I unbridle? could you unbridle? could he unbridle? could we unbridle? could you unbridle? could they unbridle?
V-ing form
could I be unbridling? could you be unbridling? could he be unbridling? could we be unbridling? could you be unbridling? could they be unbridling?
Perfect
could I have unbridled? could you have unbridled? could he have unbridled? could we have unbridled? could you have unbridled? could they have unbridled?
V-ing perfect
could I have been unbridling? could you have been unbridling? could he have been unbridling? could we have been unbridling? could you have been unbridling? could they have been unbridling?
Interro-negative form
Simple form
couldn't I unbridle? couldn't you unbridle? couldn't he unbridle? couldn't we unbridle? couldn't you unbridle? couldn't they unbridle?
V-ing form
couldn't I be unbridling? couldn't you be unbridling? couldn't he be unbridling? couldn't we be unbridling? couldn't you be unbridling? couldn't they be unbridling?
Perfect
couldn't I have unbridled? couldn't you have unbridled? couldn't he have unbridled? couldn't we have unbridled? couldn't you have unbridled? couldn't they have unbridled?
V-ing perfect
couldn't I have been unbridling? couldn't you have been unbridling? couldn't he have been unbridling? couldn't we have been unbridling? couldn't you have been unbridling? couldn't they have been unbridling?