Five pairs of letters that share one shape and change their sound with a single dot. Each pair gets seven lines: both sounds side by side, then each one alone at the start of a word, then each one inside a word, then a mix, and finally the bare letters with nothing else to lean on.
Lesson 6 covers the letters that look alike, and the Hard Concepts drills take on the Shva and the Dagesh — the dot that turns Vet into Bet is the same dot that decides half of these pairs.
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