Listen to the song again if you get completely stuck.

In this phrase, “7M5N” means “list 7 states starting with M and 5 states starting with N”. PVC is a kind of plastic, and WWI is short for “World War One. " (If you know what the words mean, you’re more likely to remember the phrase. ) These are called “mnemonic devices” (pronounced “neh-mawn-ick”), meaning “memory helpers. "

Think of “Washing dishes with oregano” to remember that Washington is next to Oregon. Repeat “The O. K. Llama pokes the textbook” to remember that Oklahoma looks like a finger jutting out to poke Texas.