Multilanguage menu import

Hello, I have a proble. I want to import nav_menu in 3 languages. I’m trying this kind of code:
` $menu_1_en = get_term_by( ‘name’, ‘Front page EN’, ‘nav_menu’ );
$menu_1_ru = get_term_by( ‘name’, ‘Front page RU’, ‘nav_menu’ );
$menu_1_lt = get_term_by( ‘name’, ‘Front page LT’, ‘nav_menu’ );

$menu_2_en = get_term_by( ‘name’, ‘Inside page EN’, ‘nav_menu’ );
$menu_2_ru = get_term_by( ‘name’, ‘Inside page RU’, ‘nav_menu’ );
$menu_2_lt = get_term_by( ‘name’, ‘Inside page LT’, ‘nav_menu’ );

set_theme_mod(
‘nav_menu_locations’, array(
‘menu-1’ => $menu_1_en->term_id,
‘menu-1’ => $menu_1_ru->term_id,
‘menu-1’ => $menu_1_lt->term_id,
‘menu-2’ => $menu_2_en->term_id,
‘menu-2’ => $menu_2_ru->term_id,
‘menu-2’ => $menu_2_lt->term_id
)
);`
But it doesnt work. How I can do that