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