Barahkhadi.

The sequence of writing the consonants, joined with the vowels,
is known as Barahkhadi
The first line of consonants are as follows:
  क, का, कि, की, कु, कू, के, कै, को, कौ, कं, क:
  ka,kaa,ki,kii,ku,kuu,ke,kai,ko,kau,kam,kaha
  ख, खा, खि, खी, खु, खू, खे, खै,खो, खौ, खं, ख:
  kha,khaa,khi,khii,khu,khuu,khe,khai,kho,khau,kham,kaha
  ग, गा, गि, गी, गु, गू, गे, गै, गो, गौ, गं, ग:
  ga,gaa,gi,gii,gu,guu,ge,gai,go,gou,gam,gaha
  घ, घा, घि, घी, घु, घू, घे, घै, घो, घौ, घं, घ:
  gha,ghaa,ghi,ghii,ghu,ghuu,ghe,ghai,gho,ghou,gham,ghaha
 The alphabet ङ does not have the various vowel sounds.
  These barakhadis help in the formation of words.So,knowing them is essential.
  Keep practising....