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

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

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

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

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