#include <iostream>
#include <string>
#include <set>

using namespace std;
const int max = 10001;

int main()
{
    string line,str;
    set<string> a;
    while (getline(cin , line) && line != "#")
    {    
        a.clear();
        for (int i = 0; i < line.size(); i++)
        {
            str = "";
            while (i < line.size() && line[i] >= ‘a‘ && line[i] <= ‘z‘)
            {
                str += line[i];
                i++;
            }
            if (str!="")
                a.insert(str);
        }
        cout << a.size() << endl;
    }

    return 0;
}