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