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

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

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

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

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