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