$9\mathrm{.}9($Telephone$-$Number Word Generator$)$ In Exercise $5\mathrm{.}12,$ you created a telephone$-$

number word$-$generator program. Modify that program to write its output to a text file. $(7$

points$)$

Hint:

$$ use a list to store the codes, e$.$g$.,$ codes $=[\text{'}\text{'},\text{'}\text{'},$ 'ABC', 'DEF', 'GHI', $\text{'}$JKL$\text{'},$

'MNO', $\text{'}$PRS$\text{'},$ 'TUV', $\text{'}$WXY$\text{'}].$

$$ Start small: try to see if you can print all $9$ combinations of $2$ numbers. For

example, if the user enters $2$ followed by $3,$ your code should printout the

following codes using several for loops:

A D

A E

A F

B D

B E

B F

C D

C E

C F