- $.25
- 'tween
- 0's and 1's
- 1-800 number
- 10
- 10-4
- 12 PM
- 12 o'clock at night
- 12-step
- 12-step group
- 1200 hours
- 13
- 18-wheeler
- 180
- 180 degree turn
- 20-20
- 20/20 vision
- 24-carat
- 24-karat
- 24/7
- 25 cents
- 33
- 35mm
- 365-day calendar year
- 3rd shift
- 4-way flashers
- 401k fund
- 45
- 4WD
- 4x4
- 5-day forecast
- 78
- 800 number
- 86
- 900 number
- 911
- à la
- à la mode
- éclair
- éclat
- élan
- élan vital
- émigré
- épée
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