English verb conjugation
COULD PLASH

Regular verb: plash - plashed - plashed

Affirmation

Simple form	V-ing form
I could plash you could plash he could plash we could plash you could plash they could plash	I could be plashing you could be plashing he could be plashing we could be plashing you could be plashing they could be plashing
Perfect	V-ing perfect
I could have plashed you could have plashed he could have plashed we could have plashed you could have plashed they could have plashed	I could have been plashing you could have been plashing he could have been plashing we could have been plashing you could have been plashing they could have been plashing

Negation

Simple form	V-ing form
I could not plash you could not plash he could not plash we could not plash you could not plash they could not plash	I could not be plashing you could not be plashing he could not be plashing we could not be plashing you could not be plashing they could not be plashing
Perfect	V-ing perfect
I could not have plashed you could not have plashed he could not have plashed we could not have plashed you could not have plashed they could not have plashed	I could not have been plashing you could not have been plashing he could not have been plashing we could not have been plashing you could not have been plashing they could not have been plashing

Interrogative form

Simple form	V-ing form
could I plash? could you plash? could he plash? could we plash? could you plash? could they plash?	could I be plashing? could you be plashing? could he be plashing? could we be plashing? could you be plashing? could they be plashing?
Perfect	V-ing perfect
could I have plashed? could you have plashed? could he have plashed? could we have plashed? could you have plashed? could they have plashed?	could I have been plashing? could you have been plashing? could he have been plashing? could we have been plashing? could you have been plashing? could they have been plashing?

Interro-negative form

Simple form	V-ing form
could I not plash? could you not plash? could he not plash? could we not plash? could you not plash? could they not plash?	could I not be plashing? could you not be plashing? could he not be plashing? could we not be plashing? could you not be plashing? could they not be plashing?
Perfect	V-ing perfect
could I not have plashed? could you not have plashed? could he not have plashed? could we not have plashed? could you not have plashed? could they not have plashed?	could I not have been plashing? could you not have been plashing? could he not have been plashing? could we not have been plashing? could you not have been plashing? could they not have been plashing?