C1111233133313231133133313331333133313231331133132313331333132212111113223121   >>    C111123313331323113313331333133313331323133113313231333133313221211111322312   <<    C1111233133313231133133313331333133313231331133132313331333132212111113223123   >>      C1111233133313231133133313331333133313231331133132313331333132212111113223122   >>