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

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

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

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

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