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 couldn't stash you couldn't stash he couldn't stash we couldn't stash you couldn't stash they couldn't stash	I couldn't be stashing you couldn't be stashing he couldn't be stashing we couldn't be stashing you couldn't be stashing they couldn't be stashing
Perfect	V-ing perfect
I couldn't have stashed you couldn't have stashed he couldn't have stashed we couldn't have stashed you couldn't have stashed they couldn't have stashed	I couldn't have been stashing you couldn't have been stashing he couldn't have been stashing we couldn't have been stashing you couldn't have been stashing they couldn't 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
couldn't I stash? couldn't you stash? couldn't he stash? couldn't we stash? couldn't you stash? couldn't they stash?	couldn't I be stashing? couldn't you be stashing? couldn't he be stashing? couldn't we be stashing? couldn't you be stashing? couldn't they be stashing?
Perfect	V-ing perfect
couldn't I have stashed? couldn't you have stashed? couldn't he have stashed? couldn't we have stashed? couldn't you have stashed? couldn't they have stashed?	couldn't I have been stashing? couldn't you have been stashing? couldn't he have been stashing? couldn't we have been stashing? couldn't you have been stashing? couldn't they have been stashing?