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DS-1000 / 353 / Say I have these 2D arrays A and B.

Problem

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Problem:
Say I have these 2D arrays A and B.
How can I remove elements from A that are in B. (Complement in set theory: A-B)
Example:
A=np.asarray([[1,1,1], [1,1,2], [1,1,3], [1,1,4]])
B=np.asarray([[0,0,0], [1,0,2], [1,0,3], [1,0,4], [1,1,0], [1,1,1], [1,1,4]])
#in original order
#output = [[1,1,2], [1,1,3]]

A:
<code>
import numpy as np
A=np.asarray([[1,1,1], [1,1,2], [1,1,3], [1,1,4]])
B=np.asarray([[0,0,0], [1,0,2], [1,0,3], [1,0,4], [1,1,0], [1,1,1], [1,1,4]])
</code>
output = ... # put solution in this variable
BEGIN SOLUTION
<code>

library

Numpy

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Source and history

upstream_id / Original problem ID
353
task_id
c864c3de-d927-59f1-8884-b9990db72f27
task_key
default--test--353
task_revision_id
1
config / split
default / test

Official source

initial import