must catechize
Verbo regular: catechize - catechized- catechized

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must catechize
you must catechize
she must catechize
we must catechize
you must catechize
they must catechize 	I must be catechizing
you must be catechizing
she must be catechizing
we must be catechizing
you must be catechizing
they must be catechizing	I must have catechized
you must have catechized
she must have catechized
we must have catechized
you must have catechized
they must have catechized	I must have been catechizing
you must have been catechizing
she must have been catechizing
we must have been catechizing
you must have been catechizing
they must have been catechizing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not catechize
you must not catechize
she must not catechize
we must not catechize
you must not catechize
they must not catechize 	I must not be catechizing
you must not be catechizing
she must not be catechizing
we must not be catechizing
you must not be catechizing
they must not be catechizing	I must not have catechized
you must not have catechized
she must not have catechized
we must not have catechized
you must not have catechized
they must not have catechized	I must not have been catechizing
you must not have been catechizing
she must not have been catechizing
we must not have been catechizing
you must not have been catechizing
they must not have been catechizing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I catechize?
must you catechize?
must she catechize?
must we catechize?
must you catechize?
must they catechize? 	must I be catechizing?
must you be catechizing?
must she be catechizing?
must we be catechizing?
must you be catechizing?
must they be catechizing? 	must I have catechized?
must you have catechized?
must she have catechized?
must we have catechized?
must you have catechized?
must they have catechized? 	must I have been catechizing?
must you have been catechizing?
must she have been catechizing?
must we have been catechizing?
must you have been catechizing?
must they have been catechizing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not catechize?
must you not catechize?
must she not catechize?
must we not catechize?
must you not catechize?
must they not catechize? 	must I not be catechizing?
must you not be catechizing?
must she not be catechizing?
must we not be catechizing?
must you not be catechizing?
must they not be catechizing? 	must I not have catechized?
must you not have catechized?
must she not have catechized?
must we not have catechized?
must you not have catechized?
must they not have catechized? 	must I not have been catechizing?
must you not have been catechizing?
must she not have been catechizing?
must we not have been catechizing?
must you not have been catechizing?
must they not have been catechizing?