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

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

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

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

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