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