C11112331333132311331333132313331323132313232233132313311223231   >>    C1111233133313231133133313231333132313231323223313231331122323   <<    C11112331333132311331333132313331323132313232233132313311223233   >>      C11112331333132311331333132313331323132313232233132313311223232   >>