English verb conjugation
COULD PICKABACK

Regular verb: pickaback - pickabacked - pickabacked

Affirmation

Simple form	V-ing form
I could pickaback you could pickaback he could pickaback we could pickaback you could pickaback they could pickaback	I could be pickabacking you could be pickabacking he could be pickabacking we could be pickabacking you could be pickabacking they could be pickabacking
Perfect	V-ing perfect
I could have pickabacked you could have pickabacked he could have pickabacked we could have pickabacked you could have pickabacked they could have pickabacked	I could have been pickabacking you could have been pickabacking he could have been pickabacking we could have been pickabacking you could have been pickabacking they could have been pickabacking

Negation

Simple form	V-ing form
I couldn't pickaback you couldn't pickaback he couldn't pickaback we couldn't pickaback you couldn't pickaback they couldn't pickaback	I couldn't be pickabacking you couldn't be pickabacking he couldn't be pickabacking we couldn't be pickabacking you couldn't be pickabacking they couldn't be pickabacking
Perfect	V-ing perfect
I couldn't have pickabacked you couldn't have pickabacked he couldn't have pickabacked we couldn't have pickabacked you couldn't have pickabacked they couldn't have pickabacked	I couldn't have been pickabacking you couldn't have been pickabacking he couldn't have been pickabacking we couldn't have been pickabacking you couldn't have been pickabacking they couldn't have been pickabacking

Interrogative form

Simple form	V-ing form
could I pickaback? could you pickaback? could he pickaback? could we pickaback? could you pickaback? could they pickaback?	could I be pickabacking? could you be pickabacking? could he be pickabacking? could we be pickabacking? could you be pickabacking? could they be pickabacking?
Perfect	V-ing perfect
could I have pickabacked? could you have pickabacked? could he have pickabacked? could we have pickabacked? could you have pickabacked? could they have pickabacked?	could I have been pickabacking? could you have been pickabacking? could he have been pickabacking? could we have been pickabacking? could you have been pickabacking? could they have been pickabacking?

Interro-negative form

Simple form	V-ing form
couldn't I pickaback? couldn't you pickaback? couldn't he pickaback? couldn't we pickaback? couldn't you pickaback? couldn't they pickaback?	couldn't I be pickabacking? couldn't you be pickabacking? couldn't he be pickabacking? couldn't we be pickabacking? couldn't you be pickabacking? couldn't they be pickabacking?
Perfect	V-ing perfect
couldn't I have pickabacked? couldn't you have pickabacked? couldn't he have pickabacked? couldn't we have pickabacked? couldn't you have pickabacked? couldn't they have pickabacked?	couldn't I have been pickabacking? couldn't you have been pickabacking? couldn't he have been pickabacking? couldn't we have been pickabacking? couldn't you have been pickabacking? couldn't they have been pickabacking?