In the alphabetical series, if the last 8 letters are inter changed with the first odd positioned letters the 9th would be :
If each of the vowels in the word HONESTLY is changed to the next letter in the English alphabetical series and each consonant is changed to the previous letter in the English alphabetical series and then the alphabets so formed are arranged in alphabetical order from left to right, the positions of how many of the following alphabets will remain unchanged?