C11112331312111112111133133313331333133313331313331121131233131   >>    C1111233131211111211113313331333133313331333131333112113123313   <<    C11112331312111112111133133313331333133313331313331121131233133   >>      C11112331312111112111133133313331333133313331313331121131233132   >>