English verb conjugation
COULD HANDWASH

Regular verb: handwash - handwashed - handwashed

Affirmation

Simple form	V-ing form
I could handwash you could handwash he could handwash we could handwash you could handwash they could handwash	I could be handwashing you could be handwashing he 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 he 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 he 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 couldn't handwash you couldn't handwash he couldn't handwash we couldn't handwash you couldn't handwash they couldn't handwash	I couldn't be handwashing you couldn't be handwashing he couldn't be handwashing we couldn't be handwashing you couldn't be handwashing they couldn't be handwashing
Perfect	V-ing perfect
I couldn't have handwashed you couldn't have handwashed he couldn't have handwashed we couldn't have handwashed you couldn't have handwashed they couldn't have handwashed	I couldn't have been handwashing you couldn't have been handwashing he couldn't have been handwashing we couldn't have been handwashing you couldn't have been handwashing they couldn't have been handwashing

Interrogative form

Simple form	V-ing form
could I handwash? could you handwash? could he handwash? could we handwash? could you handwash? could they handwash?	could I be handwashing? could you be handwashing? could he 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 he 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 he 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
couldn't I handwash? couldn't you handwash? couldn't he handwash? couldn't we handwash? couldn't you handwash? couldn't they handwash?	couldn't I be handwashing? couldn't you be handwashing? couldn't he be handwashing? couldn't we be handwashing? couldn't you be handwashing? couldn't they be handwashing?
Perfect	V-ing perfect
couldn't I have handwashed? couldn't you have handwashed? couldn't he have handwashed? couldn't we have handwashed? couldn't you have handwashed? couldn't they have handwashed?	couldn't I have been handwashing? couldn't you have been handwashing? couldn't he have been handwashing? couldn't we have been handwashing? couldn't you have been handwashing? couldn't they have been handwashing?