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

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

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

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

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