30 thirty/ˈθəːti/
31 thirty-one/ˈθəːti wʌn/
32 thirty-two /ˈθəːti tuː/
33 thirty-three /ˈθəːtiˈθriː/
34 thirty-four/ˈθəːti fɔː/
35 thirty-five/ˈθəːti faiv/
36 thirty-six/ˈθəːti sɪks/
37 thirty-seven/ˈθəːti sevn/
38 thirty-eight/ˈθəːti eit/
39 thirty-nine /ˈθəːti nain/
40 forty /ˈθɔːti/