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

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

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

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

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