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 couldn't contour you couldn't contour he couldn't contour we couldn't contour you couldn't contour they couldn't contour	I couldn't be contouring you couldn't be contouring he couldn't be contouring we couldn't be contouring you couldn't be contouring they couldn't be contouring
Perfect	V-ing perfect
I couldn't have contoured you couldn't have contoured he couldn't have contoured we couldn't have contoured you couldn't have contoured they couldn't have contoured	I couldn't have been contouring you couldn't have been contouring he couldn't have been contouring we couldn't have been contouring you couldn't have been contouring they couldn't 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
couldn't I contour? couldn't you contour? couldn't he contour? couldn't we contour? couldn't you contour? couldn't they contour?	couldn't I be contouring? couldn't you be contouring? couldn't he be contouring? couldn't we be contouring? couldn't you be contouring? couldn't they be contouring?
Perfect	V-ing perfect
couldn't I have contoured? couldn't you have contoured? couldn't he have contoured? couldn't we have contoured? couldn't you have contoured? couldn't they have contoured?	couldn't I have been contouring? couldn't you have been contouring? couldn't he have been contouring? couldn't we have been contouring? couldn't you have been contouring? couldn't they have been contouring?