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