I could carboxylate you could carboxylate he could carboxylate we could carboxylate you could carboxylate they could carboxylate
V-ing form
I could be carboxylating you could be carboxylating he could be carboxylating we could be carboxylating you could be carboxylating they could be carboxylating
Perfect
I could have carboxylated you could have carboxylated he could have carboxylated we could have carboxylated you could have carboxylated they could have carboxylated
V-ing perfect
I could have been carboxylating you could have been carboxylating he could have been carboxylating we could have been carboxylating you could have been carboxylating they could have been carboxylating
Negation
Simple form
I could not carboxylate you could not carboxylate he could not carboxylate we could not carboxylate you could not carboxylate they could not carboxylate
V-ing form
I could not be carboxylating you could not be carboxylating he could not be carboxylating we could not be carboxylating you could not be carboxylating they could not be carboxylating
Perfect
I could not have carboxylated you could not have carboxylated he could not have carboxylated we could not have carboxylated you could not have carboxylated they could not have carboxylated
V-ing perfect
I could not have been carboxylating you could not have been carboxylating he could not have been carboxylating we could not have been carboxylating you could not have been carboxylating they could not have been carboxylating
Interrogative form
Simple form
could I carboxylate? could you carboxylate? could he carboxylate? could we carboxylate? could you carboxylate? could they carboxylate?
V-ing form
could I be carboxylating? could you be carboxylating? could he be carboxylating? could we be carboxylating? could you be carboxylating? could they be carboxylating?
Perfect
could I have carboxylated? could you have carboxylated? could he have carboxylated? could we have carboxylated? could you have carboxylated? could they have carboxylated?
V-ing perfect
could I have been carboxylating? could you have been carboxylating? could he have been carboxylating? could we have been carboxylating? could you have been carboxylating? could they have been carboxylating?
Interro-negative form
Simple form
could I not carboxylate? could you not carboxylate? could he not carboxylate? could we not carboxylate? could you not carboxylate? could they not carboxylate?
V-ing form
could I not be carboxylating? could you not be carboxylating? could he not be carboxylating? could we not be carboxylating? could you not be carboxylating? could they not be carboxylating?
Perfect
could I not have carboxylated? could you not have carboxylated? could he not have carboxylated? could we not have carboxylated? could you not have carboxylated? could they not have carboxylated?
V-ing perfect
could I not have been carboxylating? could you not have been carboxylating? could he not have been carboxylating? could we not have been carboxylating? could you not have been carboxylating? could they not have been carboxylating?