10 distinct letters and the digits 0 to 9.

In the set of equations below both

**str1**and

**str2**

are strings of 4 digits:

Given:

**sqrt(str1 str2) = chit**

and

**sqrt(str2 str1) = cash**

If **10265102493** is a valid English word, how much

( complying with the puzzle's coding) is **q*z** ?

Rem: sqrt(str1 str2) is a square root of an 8 digit number represented by a concatenation of the strings in the brackets.