Q25

A lexical analyzer uses the following token definitions ${letter → [A-Za-z]}$ ${digit → [0-9]}$ ${id → letter (letter | digit)^*}$ ${number → digit}$ ${ }^{+}$ ${ws → (blank | tab| newline)}$ ${ }^{+}$ For the string given below,

$$x1 \quad 23 \mathrm{~mm} \quad 78 \quad \text{ y } \quad 7 z \quad \text { zz5 } \quad 14 A \quad 8 H \quad \text { AaYcD }$$

the number of tokens (excluding ws) that will be produced by the lexical analyzer is $\_\_\_\_$. (answer in integer)