The word(s) "could" appears 96 time(s) in 90 verse(s) in Quran in Mohsin Khan translation.

(81) Had We willed, We could have shown them to you, and you should have known them by their marks; but surely, you will know them by the tone of their speech! And Allah knows (all) your deeds.

(82) And if they had patience till you could come out to them, it would have been better for them. And Allah is Oft-Forgiving, Most Merciful.

(83) And how many a generation We have destroyed before them who were stronger in power than they. And (when Our Torment came), they ran for a refuge in the land! could they find any place of refuge (for them to save themselves from destruction)?

(84) Then they were unable to rise up, nor could they help themselves.

(85) That is what they could reach of knowledge. Verily, your Lord it is He Who knows best him who goes astray from His Path, and He knows best him who receives guidance.

(86) Were it Our Will, We could crumble it to dry pieces, and you would be regretful (or left in wonderment) [Tafsir Ibn Kathir].

(87) If We willed, We verily could make it salt (and undrinkable): why then do you not give thanks (to Allah)?

(88) And He will provide him from (sources) he never could imagine. And whosoever puts his trust in Allah, then He will suffice him. Verily, Allah will accomplish his purpose. Indeed Allah has set a measure for all things.

(89) Which Allah imposed on them for seven nights and eight days in succession, so that you could see men lying overthrown (destroyed), as if they were hollow trunks of date-palms!

(90) And none of you could have withheld Us from (punishing) him.