must colourize
Regular verb: colourize - colourized- colourized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must colourize
you must colourize
he must colourize
we must colourize
you must colourize
they must colourize 	I must be colourizing
you must be colourizing
he must be colourizing
we must be colourizing
you must be colourizing
they must be colourizing	I must have colourized
you must have colourized
he must have colourized
we must have colourized
you must have colourized
they must have colourized	I must have been colourizing
you must have been colourizing
he must have been colourizing
we must have been colourizing
you must have been colourizing
they must have been colourizing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not colourize
you must not colourize
he must not colourize
we must not colourize
you must not colourize
they must not colourize 	I must not be colourizing
you must not be colourizing
he must not be colourizing
we must not be colourizing
you must not be colourizing
they must not be colourizing	I must not have colourized
you must not have colourized
he must not have colourized
we must not have colourized
you must not have colourized
they must not have colourized	I must not have been colourizing
you must not have been colourizing
he must not have been colourizing
we must not have been colourizing
you must not have been colourizing
they must not have been colourizing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I colourize?
must you colourize?
must he colourize?
must we colourize?
must you colourize?
must they colourize? 	must I be colourizing?
must you be colourizing?
must he be colourizing?
must we be colourizing?
must you be colourizing?
must they be colourizing? 	must I have colourized?
must you have colourized?
must he have colourized?
must we have colourized?
must you have colourized?
must they have colourized? 	must I have been colourizing?
must you have been colourizing?
must he have been colourizing?
must we have been colourizing?
must you have been colourizing?
must they have been colourizing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not colourize?
must you not colourize?
must he not colourize?
must we not colourize?
must you not colourize?
must they not colourize? 	must I not be colourizing?
must you not be colourizing?
must he not be colourizing?
must we not be colourizing?
must you not be colourizing?
must they not be colourizing? 	must I not have colourized?
must you not have colourized?
must he not have colourized?
must we not have colourized?
must you not have colourized?
must they not have colourized? 	must I not have been colourizing?
must you not have been colourizing?
must he not have been colourizing?
must we not have been colourizing?
must you not have been colourizing?
must they not have been colourizing?