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문제

Miraqa and Sorya wanted to have a secret chat. To this aim, they used a simple rule as follows: “Use the upper case of the left of the correct key if it is a letter otherwise use the lower case of the correct key”

Write a program for decoding an encoded text. The encoded text is formed base on mentioned rule.

입력

Input contains one line. Which may contain both upper and lower case letters.

출력

Print the decoded text. Note that you should echo the spaces directly to output.

예제 입력 1

NUEaqa QW QUKK ARaER RGW aRRaXJ aR BUBW ON

예제 출력 1

MIRaqa WE WILL STaRT THE aTTaCK aT NINE PM