#include <iostream>
#include <cstring>
#include <fstream>
using namespace std;

#define NMAX 1000005
ifstream f("prefix.in");
ofstream g("prefix.out");

int T, m, P[NMAX];
char p[NMAX];

void afisare_Prefixe()
{
    for(int i = 0; i < m; ++i)
        g<<p[i]<<" ";
    for(int i = 0; i < m; ++i)
        g<<P[i]<<" ";
    g<<'\n';
}

void formare_Prefixe()
{
    int i=0, j=-1, res = 0;
    P[0] = -1;
    while(i < m)
    {
        while(j >= 0 && p[i] != p[j])
            j = P[j];
        i++;
        j++;
        P[i] = j;

        if(i%(i-P[i]) == 0 && P[i] != 0)
            res = i;

    }
    //afisare_Prefixe();
    g<<res<<'\n';
}

int main()
{
    f>>T;
    for(int i = 0; i < T; ++i)
    {
        f>>p;
        m = strlen(p);
        formare_Prefixe();
    }
    return 0;
}