Question regarding telisi. Rama. charanam

[CHELLAM]

Telisi Rama chinthanatho song
There are 3 charanams

Is there a reason why only 1 charanam is sung
Mostly vocalists sing the charanam. “Ramayana chapla”

How come the charanam with Thyagaraja mudra is not sung

Can some one explain
Thanks

[Lakshman]

I asked sri NSG this question and this is his reply:
Because the name rAmA occurs in the first Charanam two times. Whereas the word aja is there in the mudra Charanam which means goat