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