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

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

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

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

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