IMO

1. In my opinion (also imo)
2. International Maritime Organization
3. International Miners' Organization

• back to nature
• back-to-nature
• back to square one
• backtrack
• backtracked
• backtracking
• backtrackings
• backtracks
• back translation
• back translations
• back up
• back-up
• backup
• backup file
• backup files
• backup light
• backup lights
• backups
• backveld
• backvelder
• backvelders
• backvelds
• backward
• backward and forward
• backwardation