ح ی ثḥ-y-th
— حَيْثُḥaythu: an adverb of place (ẓarf makān), indeclinable with ḍammah, meaning "where"; no verb from this root occurs in the Quran. 31 times in the Quran. ﴿وَكُلَا مِنْهَا رَغَدًا حَيْثُ شِئْتُمَا﴾ (Al-Baqarah 2:35)
حَيْثُمَاḥaythumā: when mā is joined to it, it becomes conditional and puts two verbs in the jussive. ﴿وَحَيْثُ مَا كُنْتُمْ فَوَلُّوْا وُجُوْهَكُمْ شَطْرَهُۥ﴾ (Al-Baqarah 2:144)