C1111233133313231133133313331333133313231331133133313331311222131121   >>    C111123313331323113313331333133313331323133113313331333131122213112   <<    C1111233133313231133133313331333133313231331133133313331311222131123   >>      C1111233133313231133133313331333133313231331133133313331311222131122   >>