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