ผมได้รับโจทย์การเขียนโปรแกรมมาครับผม ว่า : We want to know the most frequently occurring letters in the text. Input
Input begins with the number of test cases on its own line. Each test case consists of a single line of text.
For each test case, output a line containing the most frequently occurring letter form the text in lowercase.
Computers account for only 5% of the country's commercial electricity consumption.