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<?php $array = [ "забони тоҷикӣ", "хуҷандӣ бӯстонӣ", "Тоҷикистон Ватанам", "Ғафуровӣ Мичуринӣ Савхозӣ", "Конверторӣ хуруфҳо" ]; var_export( preg_filter( ['/^[^ӣ]*(?:ӣ(?! ))?[^ӣ]*ӣ$/u', '/^[^ӣ]*ӣ\K [^ӣ]*ӣ$/u'], ['$0', ',$0'], $array ) );
Output for git.master, git.master_jit, rfc.property-hooks
array ( 0 => 'забони тоҷикӣ', 1 => 'хуҷандӣ, бӯстонӣ', )

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