1. Any notation that uses 12 different characters

Type of: mathematical notation

• light show
• light source
• light speed
• light time
• light touch
• light unit
• light up
• light upon
• light welterweight
• light whipping cream
• Light Within
• light-armed
• light-blue
• light-boned
• light-colored
• light-coloured
• light-duty
• light-emitting diode
• light-fingered
• light-footed
• light-green
• light-haired
• light-handed
• light-handedly
• light-headedly