I can pickaback you can pickaback he can pickaback we can pickaback you can pickaback they can pickaback
V-ing form
I can be pickabacking you can be pickabacking he can be pickabacking we can be pickabacking you can be pickabacking they can be pickabacking
Perfect
I can have pickabacked you can have pickabacked he can have pickabacked we can have pickabacked you can have pickabacked they can have pickabacked
V-ing perfect
I can have been pickabacking you can have been pickabacking he can have been pickabacking we can have been pickabacking you can have been pickabacking they can have been pickabacking
Negation
Simple form
I can't pickaback you can't pickaback he can't pickaback we can't pickaback you can't pickaback they can't pickaback
V-ing form
I can't be pickabacking you can't be pickabacking he can't be pickabacking we can't be pickabacking you can't be pickabacking they can't be pickabacking
Perfect
I can't have pickabacked you can't have pickabacked he can't have pickabacked we can't have pickabacked you can't have pickabacked they can't have pickabacked
V-ing perfect
I can't have been pickabacking you can't have been pickabacking he can't have been pickabacking we can't have been pickabacking you can't have been pickabacking they can't have been pickabacking
Interrogative form
Simple form
can I pickaback? can you pickaback? can he pickaback? can we pickaback? can you pickaback? can they pickaback?
V-ing form
can I be pickabacking? can you be pickabacking? can he be pickabacking? can we be pickabacking? can you be pickabacking? can they be pickabacking?
Perfect
can I have pickabacked? can you have pickabacked? can he have pickabacked? can we have pickabacked? can you have pickabacked? can they have pickabacked?
V-ing perfect
can I have been pickabacking? can you have been pickabacking? can he have been pickabacking? can we have been pickabacking? can you have been pickabacking? can they have been pickabacking?
Interro-negative form
Simple form
can't I pickaback? can't you pickaback? can't he pickaback? can't we pickaback? can't you pickaback? can't they pickaback?
V-ing form
can't I be pickabacking? can't you be pickabacking? can't he be pickabacking? can't we be pickabacking? can't you be pickabacking? can't they be pickabacking?
Perfect
can't I have pickabacked? can't you have pickabacked? can't he have pickabacked? can't we have pickabacked? can't you have pickabacked? can't they have pickabacked?
V-ing perfect
can't I have been pickabacking? can't you have been pickabacking? can't he have been pickabacking? can't we have been pickabacking? can't you have been pickabacking? can't they have been pickabacking?