code: def _equivalent(self, char, prev, next, implicitA):
          
          result = []
          if char.isVowel == False:
              result.append(char.chr)
              if char.isConsonant \
              and ((next is not None and next.isConsonant) \
              or next is None): 
                  result.append(DevanagariCharacter._VIRAMA)
          else:
              if prev is None or prev.isConsonant == False:
                  result.append(char.chr)
              else:
                  if char._dependentVowel is not None:
                      result.append(char._dependentVowel)
          return result
docs: Transliterate a Latin character equivalent to Devanagari.
          
          Add VIRAMA for ligatures.
          Convert standalone to dependent vowels.