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