3. The English alphabets are all arranged haphazardly, there is no reason why D is followed by E, or E by F, or F by G, etc. On the other hand Panini in the first 14 sutras of his Ashtadhyayi arranged the alphabets in Sanskrit scientifically. Thus , the first sequence of 5 consonants (the ka varga i.e. ka, kha, ga, gha, na ) are all sounds which emanate from the throat, the second sequence from the middle of the tongue, the third from the roof of the mouth, the fourth from the tip of the tongue, and the fifth from the lips. The second and fourth consonants in each sequence are aspirants in which the sound 'ha' is combined with the previous consonant e.g. ka+ha =kha.