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

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

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

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

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