C13132313123113313223313133313231133132333132322223313231333132212321   >>    C1313231312311331322331313331323113313233313232222331323133313221232   <<    C13132313123113313223313133313231133132333132322223313231333132212323   >>      C13132313123113313223313133313231133132333132322223313231333132212322   >>