[poja-n viime viiko-lla Japani-sta ystäv-i-lle-en kirjoitta-m-i-a] kirje-i-tä
boy-GEN last week-ADE Japan-ELA friend-PL-A LL-3P OS write-MA-PL-P AR letter-PL-P AR
(some of) the letters that the boy wrote to his friends last week from Japan