C211111133131323223313233313231133132333132311221123231333132313211231211   >>    C21111113313132322331323331323113313233313231122112323133313231321123121   <<    C211111133131323223313233313231133132333132311221123231333132313211231213   >>      C211111133131323223313233313231133132333132311221123231333132313211231212   >>