C111123313331323113313331333133313231333132311312111133132233132313332121   >>    C11112331333132311331333133313331323133313231131211113313223313231333212   <<    C111123313331323113313331333133313231333132311312111133132233132313332123   >>      C111123313331323113313331333133313231333132311312111133132233132313332122   >>