Dt 125 carb lines

Hi,

I just bought a dt 125 from 1990 and had a questions about the lines that goes off the carb to somewhere else.

If got one big tube that runs to the base off the bike, an overflow

But i got two more that dont connect to anything... is this normal?

https://ibb.co/nDg27kf
https://ibb.co/wCsjBLT
https://ibb.co/hDtkz0n

Thanks for helping