To translate "China" into a password, the decoding rule is: replace the original letter with the fourth letter after the original letter. For example, the fourth letter after the letter "a" is "e". Replace "a" with "e". Therefore, "China" should be translated as "glmre". Please write a program to assign the initial values of five variables Cl, C2, C3, C4 and C5 as, 'C', 'H', 'I', 'n' and 'a'. After operation, C1, C2, C3, C4 and C5 are changed into 'g', 'l', 'm', 'R' and 'e' respectively and output.