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

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

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

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

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