English verb conjugation
COULD CONTOUR

Regular verb: contour - contoured - contoured

Affirmation

Simple form	V-ing form
I could contour you could contour he could contour we could contour you could contour they could contour	I could be contouring you could be contouring he could be contouring we could be contouring you could be contouring they could be contouring
Perfect	V-ing perfect
I could have contoured you could have contoured he could have contoured we could have contoured you could have contoured they could have contoured	I could have been contouring you could have been contouring he could have been contouring we could have been contouring you could have been contouring they could have been contouring

Negation

Simple form	V-ing form
I could not contour you could not contour he could not contour we could not contour you could not contour they could not contour	I could not be contouring you could not be contouring he could not be contouring we could not be contouring you could not be contouring they could not be contouring
Perfect	V-ing perfect
I could not have contoured you could not have contoured he could not have contoured we could not have contoured you could not have contoured they could not have contoured	I could not have been contouring you could not have been contouring he could not have been contouring we could not have been contouring you could not have been contouring they could not have been contouring

Interrogative form

Simple form	V-ing form
could I contour? could you contour? could he contour? could we contour? could you contour? could they contour?	could I be contouring? could you be contouring? could he be contouring? could we be contouring? could you be contouring? could they be contouring?
Perfect	V-ing perfect
could I have contoured? could you have contoured? could he have contoured? could we have contoured? could you have contoured? could they have contoured?	could I have been contouring? could you have been contouring? could he have been contouring? could we have been contouring? could you have been contouring? could they have been contouring?

Interro-negative form

Simple form	V-ing form
could I not contour? could you not contour? could he not contour? could we not contour? could you not contour? could they not contour?	could I not be contouring? could you not be contouring? could he not be contouring? could we not be contouring? could you not be contouring? could they not be contouring?
Perfect	V-ing perfect
could I not have contoured? could you not have contoured? could he not have contoured? could we not have contoured? could you not have contoured? could they not have contoured?	could I not have been contouring? could you not have been contouring? could he not have been contouring? could we not have been contouring? could you not have been contouring? could they not have been contouring?