Four Oceans
Pacific, Atlantic, Indian, Arctic
Ninja Turtles
Leonardo, Raphael, Donatello, Michelangelo
Seinfeld Characters
Jerry, Elaine, George, Kramer
Grades of High School
Freshman, Sophmore, Junior, Senior
The Marx Brothers, excluding Groucho
Chico, Harpo, Gummo, Zeppo
Mount Rushmore Faces
George Washington, Thomas Jefferson, Theodore Roosevelt, Abraham Lincoln
Pac-Man Ghosts
Inky, Blinky, Pinky, Clyde
The Beatles
John, Paul, George, Ringo
Legs of many animals...
dogs, cats, horses, elephants, lions, tigers, bears, deer, cows, sheep, goats, camels, turtles, alligators, lizards, etc...
Cardinal Directions
North, South, East, West
Suits in a Deck
Hearts, Diamonds, Clubs, Spades
Seasons
Spring, Summer, Fall, Winter
The Golden Girls
Blanche, Dorothy, Sophia, Rose
Four Basic Math Operations
Addition, Subtraction, Multiplication, Division
Wizard of Oz
Dorothy Gale, The Tin Man, Scarecrow, Cowardly Lion
Elements
Earth, Water, Air, Fire