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The letters a, e, i, o, and u are called vowels.

The letters a, e, i, o, and u are called vowels.

Every word needs at least one vowel. The other letters are called consonants.

🔤 All Alphabet facts →

More facts about Alphabet

The English alphabet has 26 letters, from A to Z. The English alphabet has 26 letters, from A to Z. The word "alphabet" comes from the first two Greek letters: alpha and beta. The word "alphabet" comes from the first two Greek letters: alpha and beta. The Vietnamese alphabet has 29 letters and uses little tone marks. The Vietnamese alphabet has 29 letters and uses little tone marks. The letter E is used more than any other letter in English. The letter E is used more than any other letter in English. The Khmer alphabet in Cambodia has 74 letters — one of the biggest in the world. The Khmer alphabet in Cambodia has 74 letters — one of the biggest in the world.