11 mnemonic devices in this subject.

• "affect" and "effect"
• "AN hour and A half"
• Because Quamain Quamain Stays Cool, He Always Does Precisely Bring Enough Clear-cut Passes Every Period.
• FANBOYS
• Lose and Loose
• Nuns Are People And Persons In ConVents
• PRACTICE vs. PRACTISE*
• STATIONERY vs. STATIONARY
• THERE vs. THEIR
• WEATHER and WHETHER
• Your Principal is your PAL