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