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

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

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

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

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