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

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

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

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

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