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