She reversed each pair: mw → wm, qa → aq, mb → bm, qr → rq, h a → ah, lf → fl, ys → sy, bw → wb, kq → qk, iw → wi, dz → zd.
Her younger brother, playing nearby, laughed. “That sounds like nonsense words!” mwqa-mqbrh-alfysbwk-qiwdz
But Layla heard something else. She removed the first letter of each group: wqa – qbrh – lfysbwk – iwdz Still no. She reversed each pair: mw → wm, qa
Then she noticed something: the string length was 4-5-9-5. She tried an online anagram solver on each part — nothing. But when she treated the dashes as spaces and the whole thing as a single string of letters, she saw a pattern: every two letters could be reversed. qa → aq