Understand that vowel sound symbols are called lagaan (ਲਗਾਂ) – mukta (no symbol), (ਾ), (ਿ), (ੀ), (ੁ), (ੂ), (ੇ), (ੈ), (ੋ), (ੌ) – and that when attached to a letter they provide a particular sound to the letter