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

(61) And those who disbelieve say: "We believe not in this Qur'an nor in that which was before it." But if you could see when the Zalimun (polytheists and wrong-doers) will be made to stand before their Lord, how they will cast the (blaming) word one to another! Those who were deemed weak will say to those who were arrogant: "Had it not been for you, we should certainly have been believers!"

(62) And We had not given them Scriptures which they could study, nor sent to them before you (O Muhammad صلى الله عليه وسلم) any warner (Messenger).

(63) And if you could but see, when they will be terrified with no escape (for them), and they will be seized from a near place.

(64) And they will say (in the Hereafter): "We do believe (now):" but how could they receive (Faith and the acceptance of their repentance by Allah) from a place so far off (i.e. to return to the worldly life again).

(65) If you invoke (or call upon) them, they hear not your call; and if (in case) they were to hear, they could not grant it (your request) to you. And on the Day of Resurrection, they will disown your worshipping them. And none can inform you (O Muhammad صلى الله عليه وسلم) like Him Who is the All-Knower (of everything).

(66) If He willed, He could destroy you and bring about a new creation.

(67) Therein they will cry: "Our Lord! Bring us out, we shall do righteous good deeds, not (the evil deeds) that we used to do." (Allah will reply): "Did We not give you lives long enough, so that whosoever would receive admonition could receive it? And the warner came to you. So taste you (the evil of your deeds). For the Zalimun (polytheists and wrong-doers) there is no helper."

(68) Verily! Allah grasps the heavens and the earth lest they should move away from their places, and if they were to move away from their places, there is not one that could grasp them after Him. Truly, He is Ever Most Forbearing, Oft-Forgiving.

(69) And if it had been Our Will, We could have transformed them (into animals or lifeless objects) in their places. Then they would have been unable to go forward (move about) nor they could have turned back.

(70) Had Allah willed to take a son (or offspring), He could have chosen whom He willed out of those whom He created. But glory be to Him! (He is above such things). He is Allah, the One, the Irresistible .