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

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

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

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

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