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

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

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

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

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