Doing this will give

**square**a value of 81, which is a perfect square. The word

**prime**will have a value of 61, which is prime. Also,

**odd**will evaluate as 23, which is odd, and

**even**as 46, which is even.

If we were to change the values of three of the letters of the alphabet, so that the other 23 letters had the same values as above, but the chosen three had their values scrambled, words would have different values. An example of scrambling the values of three letters would be if I chose B, E and H, to give B=8 (ordinarily the value for H), E=2 (ordinarily the value for B) and H=5 (ordinarily the value for E).

With a particular scrambling of the values of some three letters,

**square**has a different value, but is still a perfect square;

**prime**has a lower value but is still a prime; and

**odd**is still odd and

**even**still even, though at least one of

**odd**or

**even**has a different value from before.

What are the three letters that had their values changed, and what are those values?