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