What are the "rules" here?
Places or countries?
I'd start with countries but within some I have lived at several places, while ion some I stayed only for a few months.
Story behind it? Try walking in my shoes

- job related until the last four.
The countries
5 Sweden
2 Poland
1 Latvia
2 Sri Lanka
1 Singapore
1 New Zeeland
1 Vanuatu
1 UK
1 Ireland
2 Romania
1 Sri Lanka
1 Romania
2 Spain
The number indicates cities within named country
I have a suggestion for a similar list (since I did that once before and still have the list) - what air companies did you travel with? - quite interesting, there are some seriously secret airlines in the world!