must bias
Regular verb: bias - biased- biased

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must bias
you must bias
he must bias
we must bias
you must bias
they must bias 	I must be biasing
you must be biasing
he must be biasing
we must be biasing
you must be biasing
they must be biasing	I must have biased
you must have biased
he must have biased
we must have biased
you must have biased
they must have biased	I must have been biasing
you must have been biasing
he must have been biasing
we must have been biasing
you must have been biasing
they must have been biasing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not bias
you must not bias
he must not bias
we must not bias
you must not bias
they must not bias 	I must not be biasing
you must not be biasing
he must not be biasing
we must not be biasing
you must not be biasing
they must not be biasing	I must not have biased
you must not have biased
he must not have biased
we must not have biased
you must not have biased
they must not have biased	I must not have been biasing
you must not have been biasing
he must not have been biasing
we must not have been biasing
you must not have been biasing
they must not have been biasing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I bias?
must you bias?
must he bias?
must we bias?
must you bias?
must they bias? 	must I be biasing?
must you be biasing?
must he be biasing?
must we be biasing?
must you be biasing?
must they be biasing? 	must I have biased?
must you have biased?
must he have biased?
must we have biased?
must you have biased?
must they have biased? 	must I have been biasing?
must you have been biasing?
must he have been biasing?
must we have been biasing?
must you have been biasing?
must they have been biasing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not bias?
must you not bias?
must he not bias?
must we not bias?
must you not bias?
must they not bias? 	must I not be biasing?
must you not be biasing?
must he not be biasing?
must we not be biasing?
must you not be biasing?
must they not be biasing? 	must I not have biased?
must you not have biased?
must he not have biased?
must we not have biased?
must you not have biased?
must they not have biased? 	must I not have been biasing?
must you not have been biasing?
must he not have been biasing?
must we not have been biasing?
must you not have been biasing?
must they not have been biasing?