C111123313331323113313331333133313331323112133313331333132331133132332132313231   >>    C11112331333132311331333133313331333132311213331333133313233113313233213231323   <<    C111123313331323113313331333133313331323112133313331333132331133132332132313233   >>      C111123313331323113313331333133313331323112133313331333132331133132332132313232   >>