C13132313123113313223313133313231133132333132322223313231333132213231   >>    C1313231312311331322331313331323113313233313232222331323133313221323   <<    C13132313123113313223313133313231133132333132322223313231333132213233   >>      C13132313123113313223313133313231133132333132322223313231333132213232   >>