O yt qyp~ y}u |y~u xtru, ru}u~~}y rx}w~}y }utyy~ y y u} {puru~~} yp~yy |qu t~y r z q|py }w~ ruy { }y~y}}, y}u~ y|p{yu{yu }ut r tu xp y}u}. T qyp~ur {u{u u||wu~yu y ru wu ~y |usp~~. Puu}up, spyx~ qt ut}u, y tpwu u|y r }p|u~{} rxpu |pu -~yqt ~y - q p, p~r |{ q|uu |r{y}y.