#include<iostream>
#include<string.h>
#include<algorithm>
using namespace std;
int main()
{
    char s[60];
    while(1)
    {
        cin>>s;
        if(strcmp(s,"#")==0)break;
        if(next_permutation(s,s+strlen(s)))cout<<s<<endl;
        else cout<<"No Successor"<<endl;
    }
    return 0;
}