lamasakhnāhum
surely We (would have) transformed them
EMPH – emphatic prefix lām + V – 1st person plural perfect verb + PRON – 1st person plural object pronoun nā + PRON – 3rd person masculine plural object pronoun Ha
Root Link: م س خ
makānatihim
their places
N – genitive feminine noun + PRON – 3rd person masculine plural object pronoun Ha
Root Link: ك و ن
is'taṭāʿū
they would have been able
V – 3rd person masculine plural (form X) perfect verb + PRON – subject pronoun waw
Root Link: ط و ع
yarjiʿūna
return
V – 3rd person masculine plural imperfect verb + PRON – subject pronoun na
Root Link: ر ج ع