I could slash you could slash he could slash we could slash you could slash they could slash
V-ing form
I could be slashing you could be slashing he could be slashing we could be slashing you could be slashing they could be slashing
Perfect
I could have slashed you could have slashed he could have slashed we could have slashed you could have slashed they could have slashed
V-ing perfect
I could have been slashing you could have been slashing he could have been slashing we could have been slashing you could have been slashing they could have been slashing
Negation
Simple form
I could not slash you could not slash he could not slash we could not slash you could not slash they could not slash
V-ing form
I could not be slashing you could not be slashing he could not be slashing we could not be slashing you could not be slashing they could not be slashing
Perfect
I could not have slashed you could not have slashed he could not have slashed we could not have slashed you could not have slashed they could not have slashed
V-ing perfect
I could not have been slashing you could not have been slashing he could not have been slashing we could not have been slashing you could not have been slashing they could not have been slashing
Interrogative form
Simple form
could I slash? could you slash? could he slash? could we slash? could you slash? could they slash?
V-ing form
could I be slashing? could you be slashing? could he be slashing? could we be slashing? could you be slashing? could they be slashing?
Perfect
could I have slashed? could you have slashed? could he have slashed? could we have slashed? could you have slashed? could they have slashed?
V-ing perfect
could I have been slashing? could you have been slashing? could he have been slashing? could we have been slashing? could you have been slashing? could they have been slashing?
Interro-negative form
Simple form
could I not slash? could you not slash? could he not slash? could we not slash? could you not slash? could they not slash?
V-ing form
could I not be slashing? could you not be slashing? could he not be slashing? could we not be slashing? could you not be slashing? could they not be slashing?
Perfect
could I not have slashed? could you not have slashed? could he not have slashed? could we not have slashed? could you not have slashed? could they not have slashed?
V-ing perfect
could I not have been slashing? could you not have been slashing? could he not have been slashing? could we not have been slashing? could you not have been slashing? could they not have been slashing?