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

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

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

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

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