#include<stdio.h>
#include<ctype.h>
#include<string.h>
void convertVowel(char *s){
    int len = strlen(s);
    for(int i =0;i<len;i++){
        if(s[i] == 'a' || s[i] == 'e' || s[i] == 'i' || s[i]) == '0') || s[i] == 'u){
            s[i] =toupper(s[i]);
        }
    }
}
int main(){
    char s[100];
    fgets(s,sizeof(s),stdin);
    s[strcspn(s,"\n")] =0;
    for(int i=0;s[i] != '\0';i++){
        if(!isalpha(s[i]) && s[i] != ' '){
            printf("Invalid input\n");
            return 1;
        }
    }
    convertVowel(s);
    return 0;
}