Similarity - No Match

[Fabian Vigna]

Hello everybody,

 

The case I have pending pertains to BANK REFAH.   If you enter BANK REFHA
inverting the last two letters, it does not find a match with Similarity 6.
It does find it with similarity 5.

 

(REFHA~0.6 AND BANK~0.6)

 

My question is: Why just inverting the last 2 letters it does not find a
match?

 

 

Thanks!

 

Fabian