English verb conjugation
COULD DOG-EAR

Regular verb: dog-ear - dog-eared - dog-eared

Affirmation

Simple form	V-ing form
I could dog-ear you could dog-ear he could dog-ear we could dog-ear you could dog-ear they could dog-ear	I could be dog-earing you could be dog-earing he could be dog-earing we could be dog-earing you could be dog-earing they could be dog-earing
Perfect	V-ing perfect
I could have dog-eared you could have dog-eared he could have dog-eared we could have dog-eared you could have dog-eared they could have dog-eared	I could have been dog-earing you could have been dog-earing he could have been dog-earing we could have been dog-earing you could have been dog-earing they could have been dog-earing

Negation

Simple form	V-ing form
I could not dog-ear you could not dog-ear he could not dog-ear we could not dog-ear you could not dog-ear they could not dog-ear	I could not be dog-earing you could not be dog-earing he could not be dog-earing we could not be dog-earing you could not be dog-earing they could not be dog-earing
Perfect	V-ing perfect
I could not have dog-eared you could not have dog-eared he could not have dog-eared we could not have dog-eared you could not have dog-eared they could not have dog-eared	I could not have been dog-earing you could not have been dog-earing he could not have been dog-earing we could not have been dog-earing you could not have been dog-earing they could not have been dog-earing

Interrogative form

Simple form	V-ing form
could I dog-ear? could you dog-ear? could he dog-ear? could we dog-ear? could you dog-ear? could they dog-ear?	could I be dog-earing? could you be dog-earing? could he be dog-earing? could we be dog-earing? could you be dog-earing? could they be dog-earing?
Perfect	V-ing perfect
could I have dog-eared? could you have dog-eared? could he have dog-eared? could we have dog-eared? could you have dog-eared? could they have dog-eared?	could I have been dog-earing? could you have been dog-earing? could he have been dog-earing? could we have been dog-earing? could you have been dog-earing? could they have been dog-earing?

Interro-negative form

Simple form	V-ing form
could I not dog-ear? could you not dog-ear? could he not dog-ear? could we not dog-ear? could you not dog-ear? could they not dog-ear?	could I not be dog-earing? could you not be dog-earing? could he not be dog-earing? could we not be dog-earing? could you not be dog-earing? could they not be dog-earing?
Perfect	V-ing perfect
could I not have dog-eared? could you not have dog-eared? could he not have dog-eared? could we not have dog-eared? could you not have dog-eared? could they not have dog-eared?	could I not have been dog-earing? could you not have been dog-earing? could he not have been dog-earing? could we not have been dog-earing? could you not have been dog-earing? could they not have been dog-earing?