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

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

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

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

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