English verb conjugation
COULD HANDWASH

Regular verb: handwash - handwashed - handwashed

Affirmation

Simple form	V-ing form
I could handwash you could handwash she could handwash we could handwash you could handwash they could handwash	I could be handwashing you could be handwashing she could be handwashing we could be handwashing you could be handwashing they could be handwashing
Perfect	V-ing perfect
I could have handwashed you could have handwashed she could have handwashed we could have handwashed you could have handwashed they could have handwashed	I could have been handwashing you could have been handwashing she could have been handwashing we could have been handwashing you could have been handwashing they could have been handwashing

Negation

Simple form	V-ing form
I could not handwash you could not handwash she could not handwash we could not handwash you could not handwash they could not handwash	I could not be handwashing you could not be handwashing she could not be handwashing we could not be handwashing you could not be handwashing they could not be handwashing
Perfect	V-ing perfect
I could not have handwashed you could not have handwashed she could not have handwashed we could not have handwashed you could not have handwashed they could not have handwashed	I could not have been handwashing you could not have been handwashing she could not have been handwashing we could not have been handwashing you could not have been handwashing they could not have been handwashing

Interrogative form

Simple form	V-ing form
could I handwash? could you handwash? could she handwash? could we handwash? could you handwash? could they handwash?	could I be handwashing? could you be handwashing? could she be handwashing? could we be handwashing? could you be handwashing? could they be handwashing?
Perfect	V-ing perfect
could I have handwashed? could you have handwashed? could she have handwashed? could we have handwashed? could you have handwashed? could they have handwashed?	could I have been handwashing? could you have been handwashing? could she have been handwashing? could we have been handwashing? could you have been handwashing? could they have been handwashing?

Interro-negative form

Simple form	V-ing form
could I not handwash? could you not handwash? could she not handwash? could we not handwash? could you not handwash? could they not handwash?	could I not be handwashing? could you not be handwashing? could she not be handwashing? could we not be handwashing? could you not be handwashing? could they not be handwashing?
Perfect	V-ing perfect
could I not have handwashed? could you not have handwashed? could she not have handwashed? could we not have handwashed? could you not have handwashed? could they not have handwashed?	could I not have been handwashing? could you not have been handwashing? could she not have been handwashing? could we not have been handwashing? could you not have been handwashing? could they not have been handwashing?