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