OK. Made some efforts to retain the names of four yugas.
The first Yuga is Krita Yuga.
It is also called Satya Yuga or Sat Yuga.
The other Yugas are Treta Yuga, Dwapara Yuga and Kali Yuga.
I also remember the 10 avatars of Vishnu and the yugas during which he has taken those avatars.
Krita yuga: Matsya, koorma, Varaha and Narasimha. (4)
Tetra: Vamana, Parashurama and Rama. (3)
Dwapara: Balarama and Krishna (2)
Kali: Kalki (1)
Regarding my subject what I remember?
Section (3) of 3 of Official language act. The Govt documents should be in Hindi and English.