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