must optimize
Regular verb: optimize - optimized- optimized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must optimize
you must optimize
she must optimize
we must optimize
you must optimize
they must optimize 	I must be optimizing
you must be optimizing
she must be optimizing
we must be optimizing
you must be optimizing
they must be optimizing	I must have optimized
you must have optimized
she must have optimized
we must have optimized
you must have optimized
they must have optimized	I must have been optimizing
you must have been optimizing
she must have been optimizing
we must have been optimizing
you must have been optimizing
they must have been optimizing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not optimize
you must not optimize
she must not optimize
we must not optimize
you must not optimize
they must not optimize 	I must not be optimizing
you must not be optimizing
she must not be optimizing
we must not be optimizing
you must not be optimizing
they must not be optimizing	I must not have optimized
you must not have optimized
she must not have optimized
we must not have optimized
you must not have optimized
they must not have optimized	I must not have been optimizing
you must not have been optimizing
she must not have been optimizing
we must not have been optimizing
you must not have been optimizing
they must not have been optimizing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I optimize?
must you optimize?
must she optimize?
must we optimize?
must you optimize?
must they optimize? 	must I be optimizing?
must you be optimizing?
must she be optimizing?
must we be optimizing?
must you be optimizing?
must they be optimizing? 	must I have optimized?
must you have optimized?
must she have optimized?
must we have optimized?
must you have optimized?
must they have optimized? 	must I have been optimizing?
must you have been optimizing?
must she have been optimizing?
must we have been optimizing?
must you have been optimizing?
must they have been optimizing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not optimize?
must you not optimize?
must she not optimize?
must we not optimize?
must you not optimize?
must they not optimize? 	must I not be optimizing?
must you not be optimizing?
must she not be optimizing?
must we not be optimizing?
must you not be optimizing?
must they not be optimizing? 	must I not have optimized?
must you not have optimized?
must she not have optimized?
must we not have optimized?
must you not have optimized?
must they not have optimized? 	must I not have been optimizing?
must you not have been optimizing?
must she not have been optimizing?
must we not have been optimizing?
must you not have been optimizing?
must they not have been optimizing?