I can catechize you can catechize she can catechize we can catechize you can catechize they can catechize
V-ing form
I can be catechizing you can be catechizing she can be catechizing we can be catechizing you can be catechizing they can be catechizing
Perfect
I can have catechized you can have catechized she can have catechized we can have catechized you can have catechized they can have catechized
V-ing perfect
I can have been catechizing you can have been catechizing she can have been catechizing we can have been catechizing you can have been catechizing they can have been catechizing
Negation
Simple form
I can't catechize you can't catechize she can't catechize we can't catechize you can't catechize they can't catechize
V-ing form
I can't be catechizing you can't be catechizing she can't be catechizing we can't be catechizing you can't be catechizing they can't be catechizing
Perfect
I can't have catechized you can't have catechized she can't have catechized we can't have catechized you can't have catechized they can't have catechized
V-ing perfect
I can't have been catechizing you can't have been catechizing she can't have been catechizing we can't have been catechizing you can't have been catechizing they can't have been catechizing
Interrogative form
Simple form
can I catechize? can you catechize? can she catechize? can we catechize? can you catechize? can they catechize?
V-ing form
can I be catechizing? can you be catechizing? can she be catechizing? can we be catechizing? can you be catechizing? can they be catechizing?
Perfect
can I have catechized? can you have catechized? can she have catechized? can we have catechized? can you have catechized? can they have catechized?
V-ing perfect
can I have been catechizing? can you have been catechizing? can she have been catechizing? can we have been catechizing? can you have been catechizing? can they have been catechizing?
Interro-negative form
Simple form
can't I catechize? can't you catechize? can't she catechize? can't we catechize? can't you catechize? can't they catechize?
V-ing form
can't I be catechizing? can't you be catechizing? can't she be catechizing? can't we be catechizing? can't you be catechizing? can't they be catechizing?
Perfect
can't I have catechized? can't you have catechized? can't she have catechized? can't we have catechized? can't you have catechized? can't they have catechized?
V-ing perfect
can't I have been catechizing? can't you have been catechizing? can't she have been catechizing? can't we have been catechizing? can't you have been catechizing? can't they have been catechizing?