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