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

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

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

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

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