Diphthongs are vowel sounds that are pronounced as a result of movement of tongue from one vowel to the other. These are the sounds:
/ei/ as in gate, cake, take, place, date, gauge etc.
/əʊ/ as in home, go, owl, own, etc
/ai/ as in buy, five, rice, write, kite, fry, price etc.
/aʊ/ as in how, cloud, out, house, blouse, browse etc.
/Ͻi/ as in boy, joy, toy, oil, toil coin, boil etc .
/ea/ as in here, ear, idea, fear, beer ,rear etc.
/ iə / as in air, their, where, hair, fair etc
/ʊə/ as in during, pure etc