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