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

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

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

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

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