I could rehash you could rehash he could rehash we could rehash you could rehash they could rehash
V-ing form
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
I could have rehashed you could have rehashed he could have rehashed we could have rehashed you could have rehashed they could have rehashed
V-ing perfect
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
I couldn't rehash you couldn't rehash he couldn't rehash we couldn't rehash you couldn't rehash they couldn't rehash
V-ing form
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
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
V-ing perfect
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
could I rehash? could you rehash? could he rehash? could we rehash? could you rehash? could they rehash?
V-ing form
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
could I have rehashed? could you have rehashed? could he have rehashed? could we have rehashed? could you have rehashed? could they have rehashed?
V-ing perfect
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
couldn't I rehash? couldn't you rehash? couldn't he rehash? couldn't we rehash? couldn't you rehash? couldn't they rehash?
V-ing form
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
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?
V-ing perfect
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?