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

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

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

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

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