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