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