(0 20 2)(1 15 7 5 4)(3 14 12 10 6)(8 11 9)(13 18 16)(17 21 19)
ALLOWS (11/8)-SEQUENCE
1: (0 4 7)
(0 5 4 20 2)(1 15 7)(3 14 12 10 6)(8 11 9)(13 18 16)(17 21 19)
2: (3 14 6)
(0 5 4 20 2)(1 15 7)(3)(6 12 10)(8 11 9)(13 18 16)(14)(17 21 19)
3: (1 15 7)
(0 5 4 20 2)(1)(3)(6 12 10)(7)(8 11 9)(13 18 16)(14)(15)(17 21 19)
4: (0 20 2)
(0)(1)(2)(3)(4 20 5)(6 12 10)(7)(8 11 9)(13 18 16)(14)(15)(17 21 19)