Description Rick.s Gum . Rick has some bubble gum, but the bubble gets too big. Can Rick's family save him? The Red Pot . Rem got a math sum wrong. She is so angry that nothing is safe from her red pot of paint! The phonemes /u/r/ are featured in this title. Level 2 - Red books introduce simple letter-sound combinations. As each set of letters is introduced, children are encouraged to use their new knowledge to sound out and blend words. For example, they will learn to blend the sounds s-a-t to make the word sat.