The Huffman dictionary provided does not have the codes for all the input signals.

As an AI, I don't have access to the specific Huffman dictionary that you are referring to. However, in general, it is possible that a Huffman dictionary may not have codes for all the input signals. This could happen if certain input signals have a very low frequency of occurrence and therefore do not warrant a code in the dictionary. Alternatively, it could be an oversight or mistake in the creation of the dictionary. In either case, it is important to ensure that the dictionary covers all possible input signals to avoid errors or unexpected behavior in the encoding and decoding process.