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