C1111233133313231133133313331333133313231331121133133313223221123231   >>    C111123313331323113313331333133313331323133112113313331322322112323   <<    C1111233133313231133133313331333133313231331121133133313223221123233   >>      C1111233133313231133133313331333133313231331121133133313223221123232   >>