#include <stdio.h>
	#include <stdlib.h>
	#include <assert.h>
	#include <ctype.h>
	#include <string.h>


	int main () {

	/* while isalpha is false, apss through unmodified */
		int c;
	    int counter = 0;
		int first_letter;
		/* char first_letter */


		while((c = getchar()) != EOF) {
			/* Move the first letter to the end. */
			if (counter == 0 && isalpha(c)){
				first_letter = c;
				counter = counter + 1;
			}
			else

					if (isupper(first_letter) && counter == 1 && isalpha(c)) {
						putchar(toupper(c));
						counter = counter + 1;
			}

			else if (isalpha(c) && islower(first_letter) && counter == 1){
				putchar(tolower(c));
				counter = counter + 1;
			}
			else if (isalpha(c) && counter >= 1){
				putchar(c);
				counter = counter + 1;
			}
			/* need to print out the first letter */
			else if (isalpha(c) == 0 && counter == 0){
				putchar(c);
				counter = 0;
			}

			else if (isalpha(c) == 0 && counter <= 3){
				if (counter == 1){
					if (islower(first_letter)){
						putchar(tolower(first_letter));
					} else
					putchar(toupper(first_letter));
				}
				else {
    			putchar(tolower(first_letter));

			}
				printf("an");
				putchar(c);
				counter = 0;
			}

			else if (isalpha(c) == 0 && counter >= 3){
				putchar(tolower(first_letter));
				putchar('o');
				putchar(c);
				counter = 0;
			}



	}


	if (counter <= 3){
				putchar(first_letter);
				printf("an");
			}
			else if (counter >= 3){
				putchar(tolower(first_letter));
				putchar('o');
			}

			return 0;

	}