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

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

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

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

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