Even the animal kingdom is taken into consideration here.
All birds emit the Ka and Ca sound. Only two birds, i.e., parrot and mynah can use the sound Ma also. All other birds only use Ka and Ca.
Amphibians like frogs make sounds that sound like Ta, Tha or Tra. Mammals like cows, sheep, goats, horses, etc., use Pa, Pha, Ba, Bha, Ma, or the next set of consonants.
Lastly come all the other alphabets like Ya, Ra, La, Va, She, Sha. Therefore, the alphabets and sounds are arranged in the same order as the theory of evolution, i.e., birds, animals, mammals and humans.
Isn’t that interesting? It is absolutely fascinating.
– Gurudev Sri Sri Ravi Shankarji