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

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

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

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

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