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

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

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

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

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