I could anaesthetise you could anaesthetise he could anaesthetise we could anaesthetise you could anaesthetise they could anaesthetise
V-ing form
I could be anaesthetising you could be anaesthetising he could be anaesthetising we could be anaesthetising you could be anaesthetising they could be anaesthetising
Perfect
I could have anaesthetised you could have anaesthetised he could have anaesthetised we could have anaesthetised you could have anaesthetised they could have anaesthetised
V-ing perfect
I could have been anaesthetising you could have been anaesthetising he could have been anaesthetising we could have been anaesthetising you could have been anaesthetising they could have been anaesthetising
Negation
Simple form
I couldn't anaesthetise you couldn't anaesthetise he couldn't anaesthetise we couldn't anaesthetise you couldn't anaesthetise they couldn't anaesthetise
V-ing form
I couldn't be anaesthetising you couldn't be anaesthetising he couldn't be anaesthetising we couldn't be anaesthetising you couldn't be anaesthetising they couldn't be anaesthetising
Perfect
I couldn't have anaesthetised you couldn't have anaesthetised he couldn't have anaesthetised we couldn't have anaesthetised you couldn't have anaesthetised they couldn't have anaesthetised
V-ing perfect
I couldn't have been anaesthetising you couldn't have been anaesthetising he couldn't have been anaesthetising we couldn't have been anaesthetising you couldn't have been anaesthetising they couldn't have been anaesthetising
Interrogative form
Simple form
could I anaesthetise? could you anaesthetise? could he anaesthetise? could we anaesthetise? could you anaesthetise? could they anaesthetise?
V-ing form
could I be anaesthetising? could you be anaesthetising? could he be anaesthetising? could we be anaesthetising? could you be anaesthetising? could they be anaesthetising?
Perfect
could I have anaesthetised? could you have anaesthetised? could he have anaesthetised? could we have anaesthetised? could you have anaesthetised? could they have anaesthetised?
V-ing perfect
could I have been anaesthetising? could you have been anaesthetising? could he have been anaesthetising? could we have been anaesthetising? could you have been anaesthetising? could they have been anaesthetising?
Interro-negative form
Simple form
couldn't I anaesthetise? couldn't you anaesthetise? couldn't he anaesthetise? couldn't we anaesthetise? couldn't you anaesthetise? couldn't they anaesthetise?
V-ing form
couldn't I be anaesthetising? couldn't you be anaesthetising? couldn't he be anaesthetising? couldn't we be anaesthetising? couldn't you be anaesthetising? couldn't they be anaesthetising?
Perfect
couldn't I have anaesthetised? couldn't you have anaesthetised? couldn't he have anaesthetised? couldn't we have anaesthetised? couldn't you have anaesthetised? couldn't they have anaesthetised?
V-ing perfect
couldn't I have been anaesthetising? couldn't you have been anaesthetising? couldn't he have been anaesthetising? couldn't we have been anaesthetising? couldn't you have been anaesthetising? couldn't they have been anaesthetising?