must colour
Regular verb: colour - coloured- coloured

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must colour
you must colour
he must colour
we must colour
you must colour
they must colour 	I must be colouring
you must be colouring
he must be colouring
we must be colouring
you must be colouring
they must be colouring	I must have coloured
you must have coloured
he must have coloured
we must have coloured
you must have coloured
they must have coloured	I must have been colouring
you must have been colouring
he must have been colouring
we must have been colouring
you must have been colouring
they must have been colouring	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not colour
you must not colour
he must not colour
we must not colour
you must not colour
they must not colour 	I must not be colouring
you must not be colouring
he must not be colouring
we must not be colouring
you must not be colouring
they must not be colouring	I must not have coloured
you must not have coloured
he must not have coloured
we must not have coloured
you must not have coloured
they must not have coloured	I must not have been colouring
you must not have been colouring
he must not have been colouring
we must not have been colouring
you must not have been colouring
they must not have been colouring	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I colour?
must you colour?
must he colour?
must we colour?
must you colour?
must they colour? 	must I be colouring?
must you be colouring?
must he be colouring?
must we be colouring?
must you be colouring?
must they be colouring? 	must I have coloured?
must you have coloured?
must he have coloured?
must we have coloured?
must you have coloured?
must they have coloured? 	must I have been colouring?
must you have been colouring?
must he have been colouring?
must we have been colouring?
must you have been colouring?
must they have been colouring? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not colour?
must you not colour?
must he not colour?
must we not colour?
must you not colour?
must they not colour? 	must I not be colouring?
must you not be colouring?
must he not be colouring?
must we not be colouring?
must you not be colouring?
must they not be colouring? 	must I not have coloured?
must you not have coloured?
must he not have coloured?
must we not have coloured?
must you not have coloured?
must they not have coloured? 	must I not have been colouring?
must you not have been colouring?
must he not have been colouring?
must we not have been colouring?
must you not have been colouring?
must they not have been colouring?