could catechize
Regular verb: catechize - catechized- catechized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could catechize
you could catechize
she could catechize
we could catechize
you could catechize
they could catechize 	I could be catechizing
you could be catechizing
she could be catechizing
we could be catechizing
you could be catechizing
they could be catechizing	I could have catechized
you could have catechized
she 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
she could have been catechizing
we could have been catechizing
you could have been catechizing
they could have been catechizing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't catechize
you couldn't catechize
she 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
she 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
she 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
she couldn't have been catechizing
we couldn't have been catechizing
you couldn't have been catechizing
they couldn't have been catechizing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I catechize?
could you catechize?
could she catechize?
could we catechize?
could you catechize?
could they catechize? 	could I be catechizing?
could you be catechizing?
could she be catechizing?
could we be catechizing?
could you be catechizing?
could they be catechizing? 	could I have catechized?
could you have catechized?
could she 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 she have been catechizing?
could we have been catechizing?
could you have been catechizing?
could they have been catechizing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I catechize?
couldn't you catechize?
couldn't she 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 she 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 she 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 she have been catechizing?
couldn't we have been catechizing?
couldn't you have been catechizing?
couldn't they have been catechizing?