can contour
Regular verb: contour - contoured- contoured

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't contour
you can't contour
he can't contour
we can't contour
you can't contour
they can't contour 	I can't be contouring
you can't be contouring
he can't be contouring
we can't be contouring
you can't be contouring
they can't be contouring	I can't have contoured
you can't have contoured
he can't have contoured
we can't have contoured
you can't have contoured
they can't have contoured	I can't have been contouring
you can't have been contouring
he can't have been contouring
we can't have been contouring
you can't have been contouring
they can't have been contouring	

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

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I contour?
can't you contour?
can't he contour?
can't we contour?
can't you contour?
can't they contour? 	can't I be contouring?
can't you be contouring?
can't he be contouring?
can't we be contouring?
can't you be contouring?
can't they be contouring? 	can't I have contoured?
can't you have contoured?
can't he have contoured?
can't we have contoured?
can't you have contoured?
can't they have contoured? 	can't I have been contouring?
can't you have been contouring?
can't he have been contouring?
can't we have been contouring?
can't you have been contouring?
can't they have been contouring?