could catechize
Verbo regular: catechize - catechized- catechized

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

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't catechize
you couldn't catechize
he couldn't catechize
we couldn't catechize
you couldn't catechize
they couldn't catechize 	I couldn't be catechizing
you couldn't be catechizing
he couldn't be catechizing
we couldn't be catechizing
you couldn't be catechizing
they couldn't be catechizing	I couldn't have catechized
you couldn't have catechized
he couldn't have catechized
we couldn't have catechized
you couldn't have catechized
they couldn't have catechized	I couldn't have been catechizing
you couldn't have been catechizing
he couldn't have been catechizing
we couldn't have been catechizing
you couldn't have been catechizing
they couldn't have been catechizing	

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

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I catechize?
couldn't you catechize?
couldn't he catechize?
couldn't we catechize?
couldn't you catechize?
couldn't they catechize? 	couldn't I be catechizing?
couldn't you be catechizing?
couldn't he be catechizing?
couldn't we be catechizing?
couldn't you be catechizing?
couldn't they be catechizing? 	couldn't I have catechized?
couldn't you have catechized?
couldn't he have catechized?
couldn't we have catechized?
couldn't you have catechized?
couldn't they have catechized? 	couldn't I have been catechizing?
couldn't you have been catechizing?
couldn't he have been catechizing?
couldn't we have been catechizing?
couldn't you have been catechizing?
couldn't they have been catechizing?