<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> <P> According to Lewand, arranged from most to least common in appearance, the letters are: etaoinshrdlcumwfgypbvkjxqz Lewand's ordering differs slightly from others, such as Cornell University Math Explorer's Project, which produced a table after measuring 40,000 words . </P>

What is the least common letter in the english language