It doesn't matter in what order the letters in a word are, the only important thing is that the first and the last letter be at the right place. The rest can be a total mess and you can still read it without problem. This is because the human mind does not read every letter by itself. but the word as a whole.

Wow! my biran is so srmat I can raed taht pefrletcy I cna't cmpehrneod scuh isestiinvne ieennssas cminog sirahgt and dtlceriy form it!