could contour
Regular verb: contour - contoured- contoured

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?