(0 15 1)(2 12 10 7 4)(3 20 18)(5 9 6)(8 21 16 13 11)(14 19 17)
ALLOWS (11/8)-SEQUENCE
1: (0 3 20)

(0 18 3 15 1)(2 12 10 7 4)(5 9 6)(8 21 16 13 11)(14 19 17)(20)
2: (3 15 18)

(0 18 1)(2 12 10 7 4)(3)(5 9 6)(8 21 16 13 11)(14 19 17)(15)(20)
3: (14 19 17)

(0 18 1)(2 12 10 7 4)(3)(5 9 6)(8 21 16 13 11)(14)(15)(17)(19)(20)
4: (13 21 16)

(0 18 1)(2 12 10 7 4)(3)(5 9 6)(8 21 11)(13)(14)(15)(16)(17)(19)(20)