Lemma إِحْدَى has 4 unique word forms and appears 11 times in the Quran.

Word Translation Occurrences
إِحۡدَىٰهُمَا one of them, one of the two, one of the two women 10
إِحۡدَى any, one 8
إِحۡدَىٰهُنَّ one of them 2
لَإِحۡدَى (is) surely one 2