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