Spelling English words correctly is not the easiest thing in the world. To help students of the language master the intricacies of orthography, a number of simple, logical rules that govern spelling have been devised. One of these rules concerns the IE and EI diphthongs. The following jingle sets that rule forth clearly and concisely, telling us which words to write with IE and which ones to write with EI.
Quincunx, Ramona J.
"A Spelling Rule,"
Word Ways: Vol. 7
, Article 13.
Available at: http://digitalcommons.butler.edu/wordways/vol7/iss1/13