Spelling rules

1. Spelling Rule 1
   After the letters к, г, х, ч, ж, ш, щ instead of ы write и
2. Spelling Rule 2
   After the letters к, г, х, ч, ж, ш, щ, ц instead of ю write у, and instead of я write а
3. Spelling Rule 3
   After the letters ч, ж, ш, щ, ц instead of unstressed o write e
4. Spelling Rule 4
   When replacing -ь, -й, -я, always use -и, never -ы.