This is a lesson for reading practice. First, listen how the အာ "a"  vowel  combined with the consonants at the word level is spelled out and pronounced. Notice that အ "á" vowel is sometimes read as a neutral vowel like in ဗ"bá" of  ဗမာစာ"bâ ma za".  Also remember that the voiceless consonants like စ"s" are liable to change to a voiced consonants at the word level.  For example see  စ"s" change to   ဇ"za" in the word  ဗမာစာ  "bâ ma za."