C11112331333132311331333133313331333132313233313231333131323112211231231   >>    C1111233133313231133133313331333133313231323331323133313132311221123123   <<    C11112331333132311331333133313331333132313233313231333131323112211231233   >>      C11112331333132311331333133313331333132313233313231333131323112211231232   >>