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

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

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

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

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