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

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

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

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

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