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

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

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

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

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