English verb conjugation
COULD PREAUTHORIZE

Regular verb: preauthorize - preauthorized - preauthorized

Affirmation

Simple form	V-ing form
I could preauthorize you could preauthorize she could preauthorize we could preauthorize you could preauthorize they could preauthorize	I could be preauthorizing you could be preauthorizing she could be preauthorizing we could be preauthorizing you could be preauthorizing they could be preauthorizing
Perfect	V-ing perfect
I could have preauthorized you could have preauthorized she could have preauthorized we could have preauthorized you could have preauthorized they could have preauthorized	I could have been preauthorizing you could have been preauthorizing she could have been preauthorizing we could have been preauthorizing you could have been preauthorizing they could have been preauthorizing

Negation

Simple form	V-ing form
I couldn't preauthorize you couldn't preauthorize she couldn't preauthorize we couldn't preauthorize you couldn't preauthorize they couldn't preauthorize	I couldn't be preauthorizing you couldn't be preauthorizing she couldn't be preauthorizing we couldn't be preauthorizing you couldn't be preauthorizing they couldn't be preauthorizing
Perfect	V-ing perfect
I couldn't have preauthorized you couldn't have preauthorized she couldn't have preauthorized we couldn't have preauthorized you couldn't have preauthorized they couldn't have preauthorized	I couldn't have been preauthorizing you couldn't have been preauthorizing she couldn't have been preauthorizing we couldn't have been preauthorizing you couldn't have been preauthorizing they couldn't have been preauthorizing

Interrogative form

Simple form	V-ing form
could I preauthorize? could you preauthorize? could she preauthorize? could we preauthorize? could you preauthorize? could they preauthorize?	could I be preauthorizing? could you be preauthorizing? could she be preauthorizing? could we be preauthorizing? could you be preauthorizing? could they be preauthorizing?
Perfect	V-ing perfect
could I have preauthorized? could you have preauthorized? could she have preauthorized? could we have preauthorized? could you have preauthorized? could they have preauthorized?	could I have been preauthorizing? could you have been preauthorizing? could she have been preauthorizing? could we have been preauthorizing? could you have been preauthorizing? could they have been preauthorizing?

Interro-negative form

Simple form	V-ing form
couldn't I preauthorize? couldn't you preauthorize? couldn't she preauthorize? couldn't we preauthorize? couldn't you preauthorize? couldn't they preauthorize?	couldn't I be preauthorizing? couldn't you be preauthorizing? couldn't she be preauthorizing? couldn't we be preauthorizing? couldn't you be preauthorizing? couldn't they be preauthorizing?
Perfect	V-ing perfect
couldn't I have preauthorized? couldn't you have preauthorized? couldn't she have preauthorized? couldn't we have preauthorized? couldn't you have preauthorized? couldn't they have preauthorized?	couldn't I have been preauthorizing? couldn't you have been preauthorizing? couldn't she have been preauthorizing? couldn't we have been preauthorizing? couldn't you have been preauthorizing? couldn't they have been preauthorizing?