#include<bits/stdc++.h>                                 
using namespace std;                               
int ans=0;                                         
int main(){                                    
   char a[1001],b[1001];
   cin>>a;  
   int s=strlen(a);
   cout<<s<<endl;    
   int k=0; 
   for(int i=0;i<s;i++){
   	   if(a[i]>='a'&&a[i]<='z'){
   	   	  cout<<a[i];
       }  
       if(a[i]>='A'&&a[i]<='Z'){
   	   	  cout<<a[i];
       }  
   }
    cout<<endl;
    k=0;
    for(int i=0;i<s;i++){
   	   if(a[i]>='0'&&a[i]<='9'){
   	   	  cout<<a[i];                                                                                                         
       }  
   }
    cout<<endl;
   k=0;
    for(int i=0;i<s;i++){
   	   if(a[i]>='a'&&a[i]<='z'){
            a[i]=a[i]+'A'-'a';
            cout<<a[i];
       }else if(a[i]>='A'&&a[i]<='Z'){
   	   	    cout<<a[i];
       }  
   }
}