The author observes the problem of the origin of the Armenian letters apart from the external comparison exclusively basing on data internals of Armenian.
The essence of the internal reconstruction is as follows: The parted circle according to its structure stands rather close to the symbols of ram which are rather frequently met in rock carvings.
We must emphasize that metathesis functioned merely in the formation of those letters which expressed similar sound: Կ (K) derived from Գ (G), Շ (Sh) from Չ (Ch), Ժ (Zh) from Գ (G), etc.
By means metathesis the following Armenian characters were formed.
As the result of the changes of these symbols the character Ա emerged.