(Solved): In a Greibach Normal Form grammar with variables \( (\mathrm{X}, \mathrm{Y}, \mathrm{Z}) \) and te ...

In a Greibach Normal Form grammar with variables \( (\mathrm{X}, \mathrm{Y}, \mathrm{Z}) \) and terminal symbols \( \mathrm{b} \) and \( \mathrm{c} \). Which productions follow the rules of Greibach NF: \[ \begin{array}{l} X \rightarrow Y X Z c \\ X \rightarrow Y b \\ Y \rightarrow b \\ Z \rightarrow c \\ X \rightarrow X Y Z \\ X \rightarrow b \\ Y \rightarrow X b \\ Z \rightarrow c \\ X \rightarrow b Z X Z \\ X \rightarrow b Y \\ Y \rightarrow b \\ Z \rightarrow c \end{array} \] None of the listed grammars are in Greibach Normal form