C11112331312111112111133133313331333133313331333112211232332231   >>    C1111233131211111211113313331333133313331333133311221123233223   <<    C11112331312111112111133133313331333133313331333112211232332233   >>      C11112331312111112111133133313331333133313331333112211232332232   >>