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