The Atbash Letter Transformation (אתבש)

At-bash is a basic "reflective" transformation pattern, wherein the first and last letters of the alef-beit transform into one another, as do the second and second-to-last, and so on.

The name at-bash is a reference to the first two of these transformation pairs: alef-tav and beit-shin.

This is the alphabetic transformation whose elements correspond to the sefirot within the partzuf of binah--Imma.