Search:

Beginner could easily have confused the two letters. Besides its a lot of help, as it is one of the most basic rules of spelling that he will have to learn.

There are spelling rules 8 , 5 and 7 letter rules, but they have to do with и and ы and е and о. a and ya

http://www.pitt.edu/~slavic/sli/russian/1/spelling.html

Here they are.