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