The word(s) "what" appears 845 time(s) in 697 verse(s) in Quran in Mohsin Khan translation.

(421) And verily, your Lord knows what their breasts conceal and what they reveal.

(422) Till, when they come (before their Lord at the place of reckoning), He will say: "Did you deny My Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) whereas you comprehended them not by knowledge (of their truth or falsehood), or what (else) was it that you used to do?"

(423) And you will see the mountains and think them solid, but they shall pass away as the passing away of the clouds. The Work of Allah, Who perfected all things, verily He is Well-Acquainted with what you do.

(424) And whoever brings an evil deed (i.e. Shirk - polytheism, disbelief in the Oneness of Allah and every evil sinful deed), they will be cast down (prone) on their faces in the Fire. (And it will be said to them) "Are you being recompensed anything except what you used to do?"

(425) And say [(O Muhammad صلى الله عليه وسلم) to these polytheists and pagans.]: "All the praises and thanks be to Allah. He will show you His Ayat (signs, in yourselves, and in the universe or punishments), and you shall recognise them. And your Lord is not unaware of what you do."

(426) So he became afraid, looking about in the city (waiting as to what will be the result of his crime of killing), when behold, the man who had sought his help the day before, called for his help (again). Musa (Moses) said to him: "Verily, you are a plain misleader!"

(427) And when he arrived at the water (a well) of Madyan (Midian) he found there a group of men watering (their flocks), and besides them he found two women who were keeping back (their flocks). He said: "what is the matter with you?" They said: "We cannot water (our flocks) until the shepherds take (their flocks). And our father is a very old man."

(428) So he watered (their flocks) for them, then he turned back to shade, and said: "My Lord! truly, I am in need of whatever good that You bestow on me!"

(429) He [Musa (Moses)] said: "That (is settled) between me and you: whichever of the two terms I fulfil, there will be no injustice to me, and Allah is Surety over what we say."

(430) So We seized him and his hosts, and We threw them all into the sea (and drowned them). So behold (O Muhammad صلى الله عليه وسلم) what was the end of the Zalimun [wrong-doers, polytheists and those who disbelieved in the Oneness of their Lord (Allah), or rejected the advice of His Messenger Musa (Moses) عليه السلام].