5m Zen
2x 5 3 2 x 2 1 verify
2x 5 3 2 x 2 1 verify pictures 5
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2x 5
2x 5 3 2 x 2 1 verify
2x 5 3 2 x 2 1 solve and verify
2x 5 3 2 x 2 1 verify
