<P> An analysis of entries in the Concise Oxford dictionary, ignoring frequency of word use, gives an order of "EARIOTNSLCUDPMHGBFYWKVXZJQ". </P> <P> The letter - frequency table below is taken from Pavel Mička's website, which cites Robert Lewand's Cryptological Mathematics . </P> <Table> <Tr> <Th> Letter </Th> <Th_colspan="2"> Relative frequency in the English language </Th> </Tr> <Tr> <Td> </Td> <Td> 8.167% </Td> <Td> 8.167 </Td> </Tr> <Tr> <Td> </Td> <Td> 1.492% </Td> <Td> 1.492 </Td> </Tr> <Tr> <Td> </Td> <Td> 2.782% </Td> <Td> 2.782 </Td> </Tr> <Tr> <Td> d </Td> <Td> 4.253% </Td> <Td> 4.253 </Td> </Tr> <Tr> <Td> </Td> <Td> 12.702% </Td> <Td> 12.702 </Td> </Tr> <Tr> <Td> f </Td> <Td> 2.228% </Td> <Td> 2.228 </Td> </Tr> <Tr> <Td> g </Td> <Td> 2.015% </Td> <Td> 2.015 </Td> </Tr> <Tr> <Td> h </Td> <Td> 6.094% </Td> <Td> 6.094 </Td> </Tr> <Tr> <Td> i </Td> <Td> 6.966% </Td> <Td> 6.966 </Td> </Tr> <Tr> <Td> j </Td> <Td> 0.153% </Td> <Td> 0.153 </Td> </Tr> <Tr> <Td> k </Td> <Td> 0.772% </Td> <Td> 0.772 </Td> </Tr> <Tr> <Td> l </Td> <Td> 4.025% </Td> <Td> 4.025 </Td> </Tr> <Tr> <Td> m </Td> <Td> 2.406% </Td> <Td> 2.406 </Td> </Tr> <Tr> <Td> n </Td> <Td> 6.749% </Td> <Td> 6.749 </Td> </Tr> <Tr> <Td> o </Td> <Td> 7.507% </Td> <Td> 7.507 </Td> </Tr> <Tr> <Td> p </Td> <Td> 1.929% </Td> <Td> 1.929 </Td> </Tr> <Tr> <Td> q </Td> <Td> 0.095% </Td> <Td> 0.095 </Td> </Tr> <Tr> <Td> r </Td> <Td> 5.987% </Td> <Td> 5.987 </Td> </Tr> <Tr> <Td> s </Td> <Td> 6.327% </Td> <Td> 6.327 </Td> </Tr> <Tr> <Td> </Td> <Td> 9.056% </Td> <Td> 9.056 </Td> </Tr> <Tr> <Td> u </Td> <Td> 2.758% </Td> <Td> 2.758 </Td> </Tr> <Tr> <Td> </Td> <Td> 0.978% </Td> <Td> 0.978 </Td> </Tr> <Tr> <Td> w </Td> <Td> 2.360% </Td> <Td> 2.36 </Td> </Tr> <Tr> <Td> x </Td> <Td> 0.150% </Td> <Td> 0.15 </Td> </Tr> <Tr> <Td> y </Td> <Td> 1.974% </Td> <Td> 1.974 </Td> </Tr> <Tr> <Td> z </Td> <Td> 0.074% </Td> <Td> 0.074 </Td> </Tr> </Table> <Tr> <Th> Letter </Th> <Th_colspan="2"> Relative frequency in the English language </Th> </Tr>

The most common letters in the english language
find me the text answering this question