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

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

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

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

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