kānū
They had been
V – 3rd person masculine plural perfect verb + PRON – subject pronoun waw
Root Link: ك و ن
yatanāhawna
forbidding each other
V – 3rd person masculine plural (form VI) imperfect verb + PRON – subject pronoun wna
Root Link: ن ه ى
faʿalūhu
they did [it]
V – 3rd person masculine plural perfect verb + PRON – subject pronoun waw + PRON – 3rd person masculine singular possessive pronoun ha
Root Link: ف ع ل
labi'sa
Surely evil
EMPH – emphatic prefix lām + V – 3rd person masculine singular perfect verb
Root Link: ب ا س
kānū
they were
V – 3rd person masculine plural perfect verb + PRON – subject pronoun waw
Root Link: ك و ن
yafʿalūna
doing
V – 3rd person masculine plural imperfect verb + PRON – subject pronoun na
Root Link: ف ع ل