// https://omegaup.com/arena/problem/Jabberwocky 
#include <stdio.h> 
#include <string.h> 
 
char letra(char a[]) { 
   return (a[1] == 'u' ? 'U' : a[0]);
} 
 
int main( ) { 
   char a[10 + 1], b[10 + 1], c[10 + 1]; 
   scanf("%s%s%s", &a[0], &b[0], &c[0]); 
   printf("%c %c %c", letra(a), letra(b), letra(c)); 
}