C1111233133313231133133313331333132313113311211331323132313231111   >>    C111123313331323113313331333133313231311331121133132313231323111   <<    C1111233133313231133133313331333132313113311211331323132313231113   >>      C1111233133313231133133313331333132313113311211331323132313231112   >>