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