具有相同音素的字母或单词,例：/e/ Ff bed 等

Bear,Better,Best,Berry,Bell,Bent,Beg,Bet,Bench.
Deck,Desk,Depth,Dell,Dead,Deaf,Dessert,Delta,Dense.
Elf,Egg,Exit,Excellent,Exhibition,Essay,Edison,Enter,Empty.
Felt,Fell,Fetch,Festival,February,Fed,Fence,Fend,Fellow,Fess.
Get,Gem,Generation,Gentle,General,Gemini,Guess,Guest,Gesture.
够了吗?