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

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

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

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

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