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

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

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

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

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