C111123313331323113313331333133313331122112312111133132233132232312131   >>    C11112331333132311331333133313331333112211231211113313223313223231213   <<    C111123313331323113313331333133313331122112312111133132233132232312133   >>      C111123313331323113313331333133313331122112312111133132233132232312132   >>