I could castigate you could castigate he could castigate we could castigate you could castigate they could castigate
V-ing form
I could be castigating you could be castigating he could be castigating we could be castigating you could be castigating they could be castigating
Perfect
I could have castigated you could have castigated he could have castigated we could have castigated you could have castigated they could have castigated
V-ing perfect
I could have been castigating you could have been castigating he could have been castigating we could have been castigating you could have been castigating they could have been castigating
Negation
Simple form
I could not castigate you could not castigate he could not castigate we could not castigate you could not castigate they could not castigate
V-ing form
I could not be castigating you could not be castigating he could not be castigating we could not be castigating you could not be castigating they could not be castigating
Perfect
I could not have castigated you could not have castigated he could not have castigated we could not have castigated you could not have castigated they could not have castigated
V-ing perfect
I could not have been castigating you could not have been castigating he could not have been castigating we could not have been castigating you could not have been castigating they could not have been castigating
Interrogative form
Simple form
could I castigate? could you castigate? could he castigate? could we castigate? could you castigate? could they castigate?
V-ing form
could I be castigating? could you be castigating? could he be castigating? could we be castigating? could you be castigating? could they be castigating?
Perfect
could I have castigated? could you have castigated? could he have castigated? could we have castigated? could you have castigated? could they have castigated?
V-ing perfect
could I have been castigating? could you have been castigating? could he have been castigating? could we have been castigating? could you have been castigating? could they have been castigating?
Interro-negative form
Simple form
could I not castigate? could you not castigate? could he not castigate? could we not castigate? could you not castigate? could they not castigate?
V-ing form
could I not be castigating? could you not be castigating? could he not be castigating? could we not be castigating? could you not be castigating? could they not be castigating?
Perfect
could I not have castigated? could you not have castigated? could he not have castigated? could we not have castigated? could you not have castigated? could they not have castigated?
V-ing perfect
could I not have been castigating? could you not have been castigating? could he not have been castigating? could we not have been castigating? could you not have been castigating? could they not have been castigating?