Jumbled up letters
Bivelee it or not, rcesrhaeers at Cmabrigde hvae dirvoseced taht the oredr of ltteers in a wrod deson’t rlaley matter. The olny iprmoetnt tihng is taht the frist and lsat ltteer are in the rghit pclae. Eevn if the rset are tolatly julebmd up you can sitll raed it. Tihs is bcuseae the huamn barin deos not raed ecah lteter invuddilialy, but inesatd renisgoecs the wrod as a wlohe.