#pragma GCC optimize ("O3")
#pragma GCC optimize ("unroll-loops")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#include <bits/stdc++.h>
typedef long long ll;
typedef long double ld;
using namespace std;
const int N = 1e5 + 5;
const int mod = 1e9 + 7;
string s, t;
map<string, bool> vis;
int memo[N][55];
int solve(int i, int j) {
    if(j == t.size())
        return 1;
    if(i == s.size())
        return 0;
    int &ans = memo[i][j];
    if(~ans)
        return ans;
    ans = solve(i + 1, j);
    if(s[i] == t[j])
        ans = (ans + solve(i + 1, j + 1)) % mod;
    return ans;
}
int main() {
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    cin >> s >> t;
    int ans = 0;
    for(int i = 0;i < t.size();i++) {
        string x = "";
        x += t.back();
        t.pop_back();
        t = x + t;
        if(vis[t])
            continue;
        vis[t] = true;
        memset(memo, -1, sizeof memo);
        ans = (ans + solve(0, 0)) % mod;
    }
    cout << ans;
    return 0;
}