English verb conjugation
COULD REHASH

Regular verb: rehash - rehashed - rehashed

Affirmation

Simple form	V-ing form
I could rehash you could rehash he could rehash we could rehash you could rehash they could rehash	I could be rehashing you could be rehashing he could be rehashing we could be rehashing you could be rehashing they could be rehashing
Perfect	V-ing perfect
I could have rehashed you could have rehashed he could have rehashed we could have rehashed you could have rehashed they could have rehashed	I could have been rehashing you could have been rehashing he could have been rehashing we could have been rehashing you could have been rehashing they could have been rehashing

Negation

Simple form	V-ing form
I couldn't rehash you couldn't rehash he couldn't rehash we couldn't rehash you couldn't rehash they couldn't rehash	I couldn't be rehashing you couldn't be rehashing he couldn't be rehashing we couldn't be rehashing you couldn't be rehashing they couldn't be rehashing
Perfect	V-ing perfect
I couldn't have rehashed you couldn't have rehashed he couldn't have rehashed we couldn't have rehashed you couldn't have rehashed they couldn't have rehashed	I couldn't have been rehashing you couldn't have been rehashing he couldn't have been rehashing we couldn't have been rehashing you couldn't have been rehashing they couldn't have been rehashing

Interrogative form

Simple form	V-ing form
could I rehash? could you rehash? could he rehash? could we rehash? could you rehash? could they rehash?	could I be rehashing? could you be rehashing? could he be rehashing? could we be rehashing? could you be rehashing? could they be rehashing?
Perfect	V-ing perfect
could I have rehashed? could you have rehashed? could he have rehashed? could we have rehashed? could you have rehashed? could they have rehashed?	could I have been rehashing? could you have been rehashing? could he have been rehashing? could we have been rehashing? could you have been rehashing? could they have been rehashing?

Interro-negative form

Simple form	V-ing form
couldn't I rehash? couldn't you rehash? couldn't he rehash? couldn't we rehash? couldn't you rehash? couldn't they rehash?	couldn't I be rehashing? couldn't you be rehashing? couldn't he be rehashing? couldn't we be rehashing? couldn't you be rehashing? couldn't they be rehashing?
Perfect	V-ing perfect
couldn't I have rehashed? couldn't you have rehashed? couldn't he have rehashed? couldn't we have rehashed? couldn't you have rehashed? couldn't they have rehashed?	couldn't I have been rehashing? couldn't you have been rehashing? couldn't he have been rehashing? couldn't we have been rehashing? couldn't you have been rehashing? couldn't they have been rehashing?