English verb conjugation
COULD STAKE

Regular verb: stake - staked - staked

Affirmation

Simple form	V-ing form
I could stake you could stake he could stake we could stake you could stake they could stake	I could be staking you could be staking he could be staking we could be staking you could be staking they could be staking
Perfect	V-ing perfect
I could have staked you could have staked he could have staked we could have staked you could have staked they could have staked	I could have been staking you could have been staking he could have been staking we could have been staking you could have been staking they could have been staking

Negation

Simple form	V-ing form
I could not stake you could not stake he could not stake we could not stake you could not stake they could not stake	I could not be staking you could not be staking he could not be staking we could not be staking you could not be staking they could not be staking
Perfect	V-ing perfect
I could not have staked you could not have staked he could not have staked we could not have staked you could not have staked they could not have staked	I could not have been staking you could not have been staking he could not have been staking we could not have been staking you could not have been staking they could not have been staking

Interrogative form

Simple form	V-ing form
could I stake? could you stake? could he stake? could we stake? could you stake? could they stake?	could I be staking? could you be staking? could he be staking? could we be staking? could you be staking? could they be staking?
Perfect	V-ing perfect
could I have staked? could you have staked? could he have staked? could we have staked? could you have staked? could they have staked?	could I have been staking? could you have been staking? could he have been staking? could we have been staking? could you have been staking? could they have been staking?

Interro-negative form

Simple form	V-ing form
could I not stake? could you not stake? could he not stake? could we not stake? could you not stake? could they not stake?	could I not be staking? could you not be staking? could he not be staking? could we not be staking? could you not be staking? could they not be staking?
Perfect	V-ing perfect
could I not have staked? could you not have staked? could he not have staked? could we not have staked? could you not have staked? could they not have staked?	could I not have been staking? could you not have been staking? could he not have been staking? could we not have been staking? could you not have been staking? could they not have been staking?