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

(11) If you could but see when they will be held (brought and made to stand) in front of their Lord! He will say: "Is not this (Resurrection and the taking of the accounts) the truth?" They will say: "Yes, by our Lord!" He will then say: "So taste you the torment because you used not to believe."

(12) If their aversion (from you, O Muhammad صلى الله عليه وسلم and from that with which you have been sent) is hard on you, (and you cannot be patient of their harm to you), then if you were able to seek a tunnel in the earth or a ladder to the sky, so that you may bring them a sign (and you cannot do it, so be patient). And had Allah willed, He could have gathered them together (all) on true guidance, so be not you one of those who are Al-Jahilun (the ignorant).

(13) Say (to the disbelievers): "Tell me, if Allah took away your hearing and your sight, and sealed up your hearts, who is there - an ilah (a god) other than Allah who could restore them to you?" See how variously We explain the Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.), yet they turn aside.

(14) And who can be more unjust than he who invents a lie against Allah, or says: "A revelation has come to me" whereas no revelation has come to him in anything ; and who says, "I will reveal the like of what Allah has revealed." And if you could but see when the Zalimun (polytheists and wrong-doers) are in the agonies of death, while the angels are stretching forth their hands (saying): "Deliver your souls! This day you shall be recompensed with the torment of degradation because of what you used to utter against Allah other than the truth. And you used to reject His Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) with disrespect! "

(15) And We shall remove from their breasts any (mutual) hatred or sense of injury (which they had, if at all, in the life of this world); rivers flowing under them, and they will say: "All the praises and thanks be to Allah, Who has guided us to this, and never could we have found guidance, were it not that Allah had guided us! Indeed, the Messengers of our Lord did come with the truth." And it will be cried out to them: "This is the Paradise which you have inherited for what you used to do."

(16) Await they just for the final fullfilment of the event? On the Day the event is finally fulfilled (i.e. the Day of Resurrection), those who neglected it before will say: "Verily, the Messengers of our Lord did come with the truth, now are there any intercessors for us that they might intercede on our behalf? Or could we be sent back (to the first life of the world) so that we might do (good) deeds other than those (evil) deeds which we used to do?" Verily, they have lost their ownselves (i.e. destroyed themselves) and that which they used to fabricate (invoking and worshipping others besides Allah) has gone away from them.

(17) And the people of Musa (Moses) made in his absence, out of their ornaments, the image of a calf (for worship). It had a sound (as if it was mooing). Did they not see that it could neither speak to them nor guide them to the way? They took it (for worship) and they were Zalimun (wrong-doers).

(18) And Musa (Moses) chose out of his people seventy (of the best) men for Our appointed time and place of meeting, and when they were seized with a violent earthquake, he said: "O my Lord, if it had been Your Will, You could have destroyed them and me before; would You destroy us for the deeds of the foolish ones among us? It is only Your Trial by which You lead astray whom You will, and keep guided whom You will. You are our Wali (Protector), so forgive us and have Mercy on us: for You are the Best of those who forgive.

(19) And if you could see when the angels take away the souls of those who disbelieve (at death); they smite their faces and their backs, (saying): "Taste the punishment of the blazing Fire."

(20) And He has united their (i.e. believers') hearts. If you had spent all that is in the earth, you could not have united their hearts, but Allah has united them. Certainly He is All-Mighty, All-Wise.