I could ablate you could ablate he could ablate we could ablate you could ablate they could ablate
V-ing form
I could be ablating you could be ablating he could be ablating we could be ablating you could be ablating they could be ablating
Perfect
I could have ablated you could have ablated he could have ablated we could have ablated you could have ablated they could have ablated
V-ing perfect
I could have been ablating you could have been ablating he could have been ablating we could have been ablating you could have been ablating they could have been ablating
Negation
Simple form
I could not ablate you could not ablate he could not ablate we could not ablate you could not ablate they could not ablate
V-ing form
I could not be ablating you could not be ablating he could not be ablating we could not be ablating you could not be ablating they could not be ablating
Perfect
I could not have ablated you could not have ablated he could not have ablated we could not have ablated you could not have ablated they could not have ablated
V-ing perfect
I could not have been ablating you could not have been ablating he could not have been ablating we could not have been ablating you could not have been ablating they could not have been ablating
Interrogative form
Simple form
could I ablate? could you ablate? could he ablate? could we ablate? could you ablate? could they ablate?
V-ing form
could I be ablating? could you be ablating? could he be ablating? could we be ablating? could you be ablating? could they be ablating?
Perfect
could I have ablated? could you have ablated? could he have ablated? could we have ablated? could you have ablated? could they have ablated?
V-ing perfect
could I have been ablating? could you have been ablating? could he have been ablating? could we have been ablating? could you have been ablating? could they have been ablating?
Interro-negative form
Simple form
could I not ablate? could you not ablate? could he not ablate? could we not ablate? could you not ablate? could they not ablate?
V-ing form
could I not be ablating? could you not be ablating? could he not be ablating? could we not be ablating? could you not be ablating? could they not be ablating?
Perfect
could I not have ablated? could you not have ablated? could he not have ablated? could we not have ablated? could you not have ablated? could they not have ablated?
V-ing perfect
could I not have been ablating? could you not have been ablating? could he not have been ablating? could we not have been ablating? could you not have been ablating? could they not have been ablating?