English verb conjugation
COULD STONEWASH

Regular verb: stonewash - stonewashed - stonewashed

Affirmation

Simple form	V-ing form
I could stonewash you could stonewash he could stonewash we could stonewash you could stonewash they could stonewash	I could be stonewashing you could be stonewashing he could be stonewashing we could be stonewashing you could be stonewashing they could be stonewashing
Perfect	V-ing perfect
I could have stonewashed you could have stonewashed he could have stonewashed we could have stonewashed you could have stonewashed they could have stonewashed	I could have been stonewashing you could have been stonewashing he could have been stonewashing we could have been stonewashing you could have been stonewashing they could have been stonewashing

Negation

Simple form	V-ing form
I could not stonewash you could not stonewash he could not stonewash we could not stonewash you could not stonewash they could not stonewash	I could not be stonewashing you could not be stonewashing he could not be stonewashing we could not be stonewashing you could not be stonewashing they could not be stonewashing
Perfect	V-ing perfect
I could not have stonewashed you could not have stonewashed he could not have stonewashed we could not have stonewashed you could not have stonewashed they could not have stonewashed	I could not have been stonewashing you could not have been stonewashing he could not have been stonewashing we could not have been stonewashing you could not have been stonewashing they could not have been stonewashing

Interrogative form

Simple form	V-ing form
could I stonewash? could you stonewash? could he stonewash? could we stonewash? could you stonewash? could they stonewash?	could I be stonewashing? could you be stonewashing? could he be stonewashing? could we be stonewashing? could you be stonewashing? could they be stonewashing?
Perfect	V-ing perfect
could I have stonewashed? could you have stonewashed? could he have stonewashed? could we have stonewashed? could you have stonewashed? could they have stonewashed?	could I have been stonewashing? could you have been stonewashing? could he have been stonewashing? could we have been stonewashing? could you have been stonewashing? could they have been stonewashing?

Interro-negative form

Simple form	V-ing form
could I not stonewash? could you not stonewash? could he not stonewash? could we not stonewash? could you not stonewash? could they not stonewash?	could I not be stonewashing? could you not be stonewashing? could he not be stonewashing? could we not be stonewashing? could you not be stonewashing? could they not be stonewashing?
Perfect	V-ing perfect
could I not have stonewashed? could you not have stonewashed? could he not have stonewashed? could we not have stonewashed? could you not have stonewashed? could they not have stonewashed?	could I not have been stonewashing? could you not have been stonewashing? could he not have been stonewashing? could we not have been stonewashing? could you not have been stonewashing? could they not have been stonewashing?