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