C1111233133313231133133313331333133313231323112331333131122213121   >>    C111123313331323113313331333133313331323132311233133313112221312   <<    C1111233133313231133133313331333133313231323112331333131122213123   >>      C1111233133313231133133313331333133313231323112331333131122213122   >>