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