Tdjp qxb bffzi af bbqj osjn xfdn (coy) ezhjie
S1 qjxb effzi bzs{ zhjie lqcd eoxfn zzhi lby iyjue:
S2 zhi exqe fqjxbe eyjae xfdn zzhi effzi af zzhi effzi fqjxbf bqj osjn xfdn zzhi exqe iyjue: