must contour
Verbo regular: contour - contoured- contoured

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must contour
you must contour
he must contour
we must contour
you must contour
they must contour 	I must be contouring
you must be contouring
he must be contouring
we must be contouring
you must be contouring
they must be contouring	I must have contoured
you must have contoured
he must have contoured
we must have contoured
you must have contoured
they must have contoured	I must have been contouring
you must have been contouring
he must have been contouring
we must have been contouring
you must have been contouring
they must have been contouring	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not contour
you must not contour
he must not contour
we must not contour
you must not contour
they must not contour 	I must not be contouring
you must not be contouring
he must not be contouring
we must not be contouring
you must not be contouring
they must not be contouring	I must not have contoured
you must not have contoured
he must not have contoured
we must not have contoured
you must not have contoured
they must not have contoured	I must not have been contouring
you must not have been contouring
he must not have been contouring
we must not have been contouring
you must not have been contouring
they must not have been contouring	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I contour?
must you contour?
must he contour?
must we contour?
must you contour?
must they contour? 	must I be contouring?
must you be contouring?
must he be contouring?
must we be contouring?
must you be contouring?
must they be contouring? 	must I have contoured?
must you have contoured?
must he have contoured?
must we have contoured?
must you have contoured?
must they have contoured? 	must I have been contouring?
must you have been contouring?
must he have been contouring?
must we have been contouring?
must you have been contouring?
must they have been contouring? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not contour?
must you not contour?
must he not contour?
must we not contour?
must you not contour?
must they not contour? 	must I not be contouring?
must you not be contouring?
must he not be contouring?
must we not be contouring?
must you not be contouring?
must they not be contouring? 	must I not have contoured?
must you not have contoured?
must he not have contoured?
must we not have contoured?
must you not have contoured?
must they not have contoured? 	must I not have been contouring?
must you not have been contouring?
must he not have been contouring?
must we not have been contouring?
must you not have been contouring?
must they not have been contouring?