C13132313123113313223313133313231133132333132311113313232332321   >>    C1313231312311331322331313331323113313233313231111331323233232   <<    C13132313123113313223313133313231133132333132311113313232332323   >>      C13132313123113313223313133313231133132333132311113313232332322   >>