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