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

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

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

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

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