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