English verb conjugation
CAN CONTOUR

Regular verb: contour - contoured - contoured

Affirmation

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

Interrogative form

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