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

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

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

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

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