He erased all of their texts, and then he cut the sheets down in the middle, he shuffled them up, and he rotated them 90 degrees, and he wrote prayers on top of these books.
Il a effacé tous les textes, et ensuite il a coupé les feuilles au milieu, il les a mélangées, et il les a tournés de 90°, et il a écrit ses prières dessus.