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

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

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

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

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