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