must singularize
Verbo regular: singularize - singularized- singularized

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must singularize
you must singularize
she must singularize
we must singularize
you must singularize
they must singularize 	I must be singularizing
you must be singularizing
she must be singularizing
we must be singularizing
you must be singularizing
they must be singularizing	I must have singularized
you must have singularized
she must have singularized
we must have singularized
you must have singularized
they must have singularized	I must have been singularizing
you must have been singularizing
she must have been singularizing
we must have been singularizing
you must have been singularizing
they must have been singularizing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not singularize
you must not singularize
she must not singularize
we must not singularize
you must not singularize
they must not singularize 	I must not be singularizing
you must not be singularizing
she must not be singularizing
we must not be singularizing
you must not be singularizing
they must not be singularizing	I must not have singularized
you must not have singularized
she must not have singularized
we must not have singularized
you must not have singularized
they must not have singularized	I must not have been singularizing
you must not have been singularizing
she must not have been singularizing
we must not have been singularizing
you must not have been singularizing
they must not have been singularizing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I singularize?
must you singularize?
must she singularize?
must we singularize?
must you singularize?
must they singularize? 	must I be singularizing?
must you be singularizing?
must she be singularizing?
must we be singularizing?
must you be singularizing?
must they be singularizing? 	must I have singularized?
must you have singularized?
must she have singularized?
must we have singularized?
must you have singularized?
must they have singularized? 	must I have been singularizing?
must you have been singularizing?
must she have been singularizing?
must we have been singularizing?
must you have been singularizing?
must they have been singularizing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not singularize?
must you not singularize?
must she not singularize?
must we not singularize?
must you not singularize?
must they not singularize? 	must I not be singularizing?
must you not be singularizing?
must she not be singularizing?
must we not be singularizing?
must you not be singularizing?
must they not be singularizing? 	must I not have singularized?
must you not have singularized?
must she not have singularized?
must we not have singularized?
must you not have singularized?
must they not have singularized? 	must I not have been singularizing?
must you not have been singularizing?
must she not have been singularizing?
must we not have been singularizing?
must you not have been singularizing?
must they not have been singularizing?