Bangla numbers 90 to 99 (নব্বই থেকে নিরানব্বই)

The cheapest decade to learn, because it recycles: বিরা-, তিরা-, চুরা- are the same prefixes the eighties used, now in front of -নব্বই. The last number is the exception that closes the hundred — নিরানব্বই (99) is built with নিরা-, not the ঊন- that produced every other nine from 29 up.