Consider the following procedures.

PROCEDURE proc$1($str$)$

$\{$

DISPLAY$($str$)$

DISPLAY$("$happy$")$

$\}$

PROCEDURE proc$2($str$1,$ str$2)$

$\{$

proc$1($str$2)$

DISPLAY$($str$1)$

$\}$

What is displayed as a result of the procedure call proc$2("$birthday$","$to you"$)?$