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

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

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

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

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