This vowel isn't very common in Hindi and is only found in Hindi words of Sanskrit origin.When ऋ is added to a consonant, you add the symbol ृ beneath the consonant.When औ is added to a consonant, you add the symbol ौ to the right-hand side of the consonant (after the consonant).When ओ is added to a consonant, you add the symbol ो to the right-hand side of the consonant (after the consonant).When ऐ is added to a consonant, you add the symbol ै above the consonant.When ए is added to a consonant, you add the symbol े above the consonant.When ऊ is added to a consonant, you add the symbol ू beneath the consonant.When उ is added to a consonant, you add the symbol ु beneath the consonant.When ई is added to a consonant, you add the symbol ी to the right-hand side of the consonant (after the consonant).When इ is added to a consonant, you add the symbol ि to the left-hand side of the consonant (before the consonant).When आ is added to a consonant, you add the symbol ा to the end of the consonant (for example, न na becomes ना naa when आ is added to it).अ does not change the consonant, so if you see a consonant without a modifying symbol, it will have this vowel sound.X Research source Vowels in Hindi have two forms: one form for when they are used by themselves, and one form for when the vowel is joined to a consonant in a word. Hindi has 11 vowels, some of which are indicated by the use of diacritic marks, or symbols added to the letters of an alphabet in order to show different pronunciations.