Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could calculate calculate you could calculate calculate he could calculate calculate we could calculate calculate you could calculate calculate they could calculate calculate
V-ing form
I could be calculate calculating you could be calculate calculating he could be calculate calculating we could be calculate calculating you could be calculate calculating they could be calculate calculating
Perfect
I could have calculate calculated you could have calculate calculated he could have calculate calculated we could have calculate calculated you could have calculate calculated they could have calculate calculated
V-ing perfect
I could have been calculate calculating you could have been calculate calculating he could have been calculate calculating we could have been calculate calculating you could have been calculate calculating they could have been calculate calculating
Negation
Simple form
I could not calculate calculate you could not calculate calculate he could not calculate calculate we could not calculate calculate you could not calculate calculate they could not calculate calculate
V-ing form
I could not be calculate calculating you could not be calculate calculating he could not be calculate calculating we could not be calculate calculating you could not be calculate calculating they could not be calculate calculating
Perfect
I could not have calculate calculated you could not have calculate calculated he could not have calculate calculated we could not have calculate calculated you could not have calculate calculated they could not have calculate calculated
V-ing perfect
I could not have been calculate calculating you could not have been calculate calculating he could not have been calculate calculating we could not have been calculate calculating you could not have been calculate calculating they could not have been calculate calculating
Interrogative form
Simple form
could I calculate calculate? could you calculate calculate? could he calculate calculate? could we calculate calculate? could you calculate calculate? could they calculate calculate?
V-ing form
could I be calculate calculating? could you be calculate calculating? could he be calculate calculating? could we be calculate calculating? could you be calculate calculating? could they be calculate calculating?
Perfect
could I have calculate calculated? could you have calculate calculated? could he have calculate calculated? could we have calculate calculated? could you have calculate calculated? could they have calculate calculated?
V-ing perfect
could I have been calculate calculating? could you have been calculate calculating? could he have been calculate calculating? could we have been calculate calculating? could you have been calculate calculating? could they have been calculate calculating?
Interro-negative form
Simple form
could I not calculate calculate? could you not calculate calculate? could he not calculate calculate? could we not calculate calculate? could you not calculate calculate? could they not calculate calculate?
V-ing form
could I not be calculate calculating? could you not be calculate calculating? could he not be calculate calculating? could we not be calculate calculating? could you not be calculate calculating? could they not be calculate calculating?
Perfect
could I not have calculate calculated? could you not have calculate calculated? could he not have calculate calculated? could we not have calculate calculated? could you not have calculate calculated? could they not have calculate calculated?
V-ing perfect
could I not have been calculate calculating? could you not have been calculate calculating? could he not have been calculate calculating? could we not have been calculate calculating? could you not have been calculate calculating? could they not have been calculate calculating?