English verb conjugation
COULD CATECHIZE

Regular verb: catechize - catechized - catechized

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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

Negation

Simple form	V-ing form
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
Perfect	V-ing perfect
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

Interrogative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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?

Interro-negative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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?