This is the code from Urza that I edited and added some things on. Credits to Urza.

menu nicklist {
  .KickBan $1
  ..Select Ban Mask: return
  ..$str(-,20) : return
  ..Ban1:/ban -k $chan $1 1 $$?="Reason"
  ..Ban2:/ban -k $chan $1 2 $$?="Reason"
  ..Ban3:/ban -k $chan $1 3 $$?="Reason"
  ..Ban4:/ban -k $chan $1 4 $$?="Reason"
  ..Ban5:/ban -k $chan $1 5 $$?="Reason"
  ..Ban6:/ban -k $chan $1 6 $$?="Reason"
  ..Ban7:/ban -k $chan $1 7 $$?="Reason"
  ..Ban8:/ban -k $chan $1 8 $$?="Reason"
  ..Ban9:/ban -k $chan $1 9 $$?="Reason"
  ..Ban10:/ban -k $chan $1 10 $$?="Reason"
  ...More
  ...Ban11:/ban -k $chan $1 11 $$?="Reason"
  ...Ban12:/ban -k $chan $1 12 $$?="Reason"
  ...Ban13:/ban -k $chan $1 13 $$?="Reason"
  ...Ban14:/ban -k $chan $1 14 $$?="Reason"
  ...Ban15:/ban -k $chan $1 15 $$?="Reason"
  ...Ban16:/ban -k $chan $1 16 $$?="Reason"
  ...Ban17:/ban -k $chan $1 17 $$?="Reason"
  ...Ban18:/ban -k $chan $1 18 $$?="Reason"
  ...Ban19:/ban -k $chan $1 19 $$?="Reason"
  ...Ban20:/ban -k $chan $1 20 $$?="Reason"
}