(0 19 4)(1 7 5)(2 16 15)(3 11 10)(6 12 8)(9 17 14)(13 20 18)
ALLOWS (11/8)-SEQUENCE
1: (2 16 18)
(0 19 4)(1 7 5)(2 13 20 18 15)(3 11 10)(6 12 8)(9 17 14)(16)
2: (2 13 20)
(0 19 4)(1 7 5)(2 18 15)(3 11 10)(6 12 8)(9 17 14)(13)(16)(20)
3: (9 17 14)
(0 19 4)(1 7 5)(2 18 15)(3 11 10)(6 12 8)(9)(13)(14)(16)(17)(20)
4: (0 19 4)
(0)(1 7 5)(2 18 15)(3 11 10)(4)(6 12 8)(9)(13)(14)(16)(17)(19)(20)