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

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

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

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

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