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2x+y-3=0 x-2y+1=0 x+2y-3=0 2x-y-1=0
2x-y-5=0 2x+y-3=0 x+y-1=0 x-y-3=0
x-y-3=0 2x+y-3=0 x+y-1=0 2x-y-5=0
x﹣y﹣3=0 2x+y﹣3=0 x+y﹣1=0 2x﹣y﹣5=0
2x+y-3=0 x-2y+1=0 x+2y-3=0 2x-y-1=0
2x+y-3=0 x-2y+1=0 x+2y-3=0 2x-y-1=0
x-y+1=0 x+y-1=0 x-y-1=0 x+y+1=0
x-y-3=0 2x+y-3=0 x+y-1=0 2x-y-5=0
2x+y﹣3=0 x﹣2y+1=0 x+2y﹣3=0 2x﹣y﹣1=0
x-2y+1=0 x+2y-3=0 2x+y-3=0 2x-y-1=0
2x+y-3=0 x-2y+1=0 x+2y-3=0 2x-y-1=0