1.Vowel Sound / ɑ /

https://www.youtube.com/watch?v=R5CY1UniS68

2.Vowel Sound / æ / as in "cat"

https://www.youtube.com/watch?v=mynucZiy-Ug&t=65s

3.Vowel Sound / ʌ /

Please Find the some words :  

4.Vowel Sound / ə / (Schwa) as in "ago"

https://www.youtube.com/watch?v=m1mDSUSwNls&t=48s

example )

1. paragraph

/ˈper.ə.ɡræf/

https://dictionary.cambridge.org/us/dictionary/english/paragraph

there is no Vowel Sound / ɑ / in paragraph

first a =>/e/ second a =>/ə/. third a =>/æ/