Dr. R. Mathivanan deciphered the sindhy valley script and found hundreds of words of tamil. He came to the conclusion that the script is ancient tamil script.

Some of the words are

Avvan, Yanan, aranan, sanan, anthan,panan,enappan,kavachan,
kalaiyan etc.

He peculiarly noticed the words of gender difference.

thangan(thangai), nangan(nangai), avvan(avvai), Kannagan(kannagi)

The tamil words (sindhy valley)

saman,thaman,thathan,saththan,nanthan,Eethan, arayan,arasan,
oman,man,manan,Kovan etc. are

now in north paly languages as

samanlal,thaman(sindhi), sunilTHATH,Seit(shetty),nandalal, Eththan(sindhi), rai or rao, raj or raja, oman(malayalam),man, govindhu or gopi respectively.

f.s.gandhi