33 does appear to be popping up a lot.
Joseph McCann: Serial rapist gets 33 life sentences after series of sex attacks
The 34-year-old became Britain's most wanted man after travelling the country to kidnap and assault his victims at knifepoint.
https://news.sky.com/story/joseph-mccann-serial-rapist-gets-33-life-sentences-after-campaign-of-sex-attacks-11882129