... There are 20 vowels in the English language, 12 of them are pure vowels (single vowels), and the left eights dipthongs (combination of two vowels). - The 12 pure vowels: / I - i: /, / e - ổ/, / o ... choice, chaos, chemist, chest, chemical, chicken, cheap, catch, chemistry, school, scholar… Ex 12: Classify / s / and / z / : See, seat, please, measure, mouse, pass, mass, bags, close, has, ... throat, thwart, thwack,… 3.10. / v / + / j /: View, viewer,… 3.11. / ∫ / + / r /: Shrink, shriek,… 3 .12. / m / + / j /: Music, mule,… 3.13. / n / + / j /: New, nude,… 3.14. / spr /: spread, spray,...