Module 1

• The apostrophe is dropped in expressions with
  gu, gum, gun, gur, ga, gad, gam, gan, gar
  e.g. gan togail, gum faca, gur e
  
  
• The apostrophe is retained after the past tense marker dh’
  e.g. dh’òl, dh’fhalbh (note: no space after apostrophe)
  
  
• If the verb 'is' is not written in full, apostrophe is retained
  ’s math ’s dòcha (note: space after s)
  mo and do also retain apostrophe and the space
  e.g. m’ athair; d’ fhidheal