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