TONGUE  TWISTERS !!!

Difference between /?/ , /s/, /ð/ and /z/
She sells seashells by the seashore

Difference between /?/, /t?/ and /i/, /i:/
Cheap ship trips

Difference between /s/ and /?/
We surely shall see the sunshine soon

Difference between /f/ and /p/
Fat frogs flying past fast

Diphthong /??/

A noisy noise annoys an oyster