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