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

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

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

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

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