function symbols = bits_to_symbols(bits, alphabet_bits)
    symbols_num = (length(bits) + alphabet_bits - 1) / alphabet_bits;
    alphabet_size = power(alphabet_bits, 2);
    % ToDo: align input bits to alphtbet bits division
    k = 1;
    for i = 1:symbols_num
        symbol = 0;
        mask = 1;
        for j = 1:alphabet_bits
            symbol = symbol + mask * bits(k);
            mask = mask * 2;
            k = k + 1;
        end
        symbols(i) = symbol;
        %symbols(i) = (alphabet_size / 2) - symbol;
    end