return 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,13,14],[2,14,15,8],[2,7,16,3],[3,16,17,10],[4,9,17,18],[4,18,19,5],[5,19,20,13],[6,12,20,14],[6,13,20,7],[7,20,19,16],[8,15,21,9],[9,21,18,10],[10,17,21,11],[11,21,15,12],[12,15,14,13],[16,19,18,17]],[[2,3,4,5],[1,6,7,8],[1,8,9,10],[1,10,11,12],[1,12,13,6],[2,5,14,15],[2,15,16,8],[2,7,17,3],[3,17,18,19],[3,19,11,4],[4,10,19,12],[4,11,20,5],[5,20,18,14],[6,13,21,15],[6,14,16,7],[7,15,21,17],[8,16,21,9],[9,21,13,20],[9,20,11,10],[12,19,18,13],[14,18,17,16]],[[2,3,4,5],[1,6,7,3],[1,2,8,9],[1,9,10,11],[1,11,12,6],[2,5,13,7],[2,6,14,8],[3,7,14,15],[3,15,10,4],[4,9,16,17],[4,17,18,5],[5,18,19,13],[6,12,19,14],[7,13,20,8],[8,20,16,9],[10,15,21,17],[10,16,18,11],[11,17,21,12],[12,21,20,13],[14,19,21,15],[16,20,19,18]],[[2,3,4,5],[1,6,7,8],[1,8,9,4],[1,3,10,11],[1,11,12,6],[2,5,12,13],[2,13,14,8],[2,7,15,3],[3,15,16,10],[4,9,17,11],[4,10,18,5],[5,18,19,6],[6,19,14,7],[7,13,20,15],[8,14,16,9],[9,15,20,17],[10,16,21,18],[11,17,21,12],[12,21,20,13],[14,19,21,16],[17,20,19,18]]];