Every sound, sorted by position
Practice /s/, /z/, /r/, /l/, /k/, /g/, /f/, /v/, /sh/, /ch/, /j/, /th/, /t/, /d/, /p/, /b/, /m/ and /n/ in initial, medial and final positions, initial and final blends, and vocalic /r/. That’s 333 clear picture targets.
Words are tagged from their actual pronunciation, so “car” counts as vocalic /r/, “tree” as an /r/ blend, and “star” as an /s/ blend, never initial /s/.