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