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

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

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

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

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