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

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

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

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

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