English verb conjugation
COULD STASH

Regular verb: stash - stashed - stashed

Affirmation

Simple form	V-ing form
I could stash you could stash he could stash we could stash you could stash they could stash	I could be stashing you could be stashing he could be stashing we could be stashing you could be stashing they could be stashing
Perfect	V-ing perfect
I could have stashed you could have stashed he could have stashed we could have stashed you could have stashed they could have stashed	I could have been stashing you could have been stashing he could have been stashing we could have been stashing you could have been stashing they could have been stashing

Negation

Simple form	V-ing form
I could not stash you could not stash he could not stash we could not stash you could not stash they could not stash	I could not be stashing you could not be stashing he could not be stashing we could not be stashing you could not be stashing they could not be stashing
Perfect	V-ing perfect
I could not have stashed you could not have stashed he could not have stashed we could not have stashed you could not have stashed they could not have stashed	I could not have been stashing you could not have been stashing he could not have been stashing we could not have been stashing you could not have been stashing they could not have been stashing

Interrogative form

Simple form	V-ing form
could I stash? could you stash? could he stash? could we stash? could you stash? could they stash?	could I be stashing? could you be stashing? could he be stashing? could we be stashing? could you be stashing? could they be stashing?
Perfect	V-ing perfect
could I have stashed? could you have stashed? could he have stashed? could we have stashed? could you have stashed? could they have stashed?	could I have been stashing? could you have been stashing? could he have been stashing? could we have been stashing? could you have been stashing? could they have been stashing?

Interro-negative form

Simple form	V-ing form
could I not stash? could you not stash? could he not stash? could we not stash? could you not stash? could they not stash?	could I not be stashing? could you not be stashing? could he not be stashing? could we not be stashing? could you not be stashing? could they not be stashing?
Perfect	V-ing perfect
could I not have stashed? could you not have stashed? could he not have stashed? could we not have stashed? could you not have stashed? could they not have stashed?	could I not have been stashing? could you not have been stashing? could he not have been stashing? could we not have been stashing? could you not have been stashing? could they not have been stashing?