C2221333133313331311233132313331333133313232123313331323113312111   >>    C222133313331333131123313231333133313331323212331333132311331211   <<    C2221333133313331311233132313331333133313232123313331323113312113   >>      C2221333133313331311233132313331333133313232123313331323113312112   >>