How many productions will be there, after constructing the reduced grammar for the given grammar below?
\[ \text{1. } X \rightarrow aYa \text{2. } Y \rightarrow Xb \text{3. } Y \rightarrow bCC \text{4. } C \rightarrow ab \text{5. } E \rightarrow aC \text{6. } Z \rightarrow aZY \]