Dictionary of English

Write a program that given a text, lists the words appearing in it grouped by their first letter.

Input

The input is a text, containing no punctuation signs, only letters (either upper or lowercase) and whitespaces.

Output

The output is, for each letter in the alphabet, the list of words in the text starting with that letter, lowercased and sorted alphabetically. Follow the format of the examples

Problem information

Author: ProAl1

Generation: 2026-01-25T19:19:38.481Z