#include<stdio.h>

int main() {
    char reversed[1003],originalInput[1000];
    int length=0;
    printf("Input: ");
    scanf("%s", reversed);
    while(reversed[length]!='\0'){
        length++;
    }
    length=length-3;
    reversed[length]='\0';
    for(int i=0;i<length;i++){
        if(reversed[i]=='0') reversed[i]='a';
        else if(reversed[i]=='1') reversed[i]='e';
        else if(reversed[i]=='2') reversed[i]='i';
        else if(reversed[i]=='3') reversed[i]='o';
        else if(reversed[i]=='4') reversed[i]='u';
    }
    for(int i=0;i<length;i++){
        originalInput[length-i-1]=reversed[i];
    }
    printf("\nOutput: %s\n", originalInput);
    return 0;
}