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

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

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

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

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