Verses or rhymes used to help you to remember things are known as mnemonics. They’re sometimes made of the the first letters of a series of words you want to memorise. For example, Richard of York gives battle in vain for the colours of the rainbow (red, orange, yellow, green blue, indigo, violet); Every good boy deserves fudge for the lines of the treble clef of a musical stave (e, g, b, d, f), and My Very Efficient Monkey Just Sorted Unused Napkins for the major planets (Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune).

Do you have any other interesting mnemonics in other languages?