C312312111133113313231333133313331333133311211331323133311212231   >>    C31231211113311331323133313331333133313331121133132313331121223   <<    C312312111133113313231333133313331333133311211331323133311212233   >>      C312312111133113313231333133313331333133311211331323133311212232   >>