#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pi;
typedef pair<ll, ll> pl;
typedef vector<int> vi;
typedef vector<ll> vl;
#define PB push_back
#define MP make_pair
#define A first
#define B second
#define SZ(x) int(x.size())
#define FR(i, a, b) for (int i = (a); i < (b); ++i)
#define FOR(i, n) FR(i, 0, n)
const int M = 1000000007;
mt19937_64 rnd(chrono::steady_clock::now().time_since_epoch().count());

vector<string> s(3);

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    FOR(i, 3) cin >> s[i];
    int n = SZ(s[0]);
    vector<vi> cnt(3, vi(n));
    FOR(i, n) {
        int ok = true;
        FR(j, i, i + n) {
            if (s[0][j - i] == s[1][j % n]) {
                ok = false;
                break;
            }
        }
        if (ok) cnt[0][i] = 1;
    }
    FOR(i, n) {
        int ok = true;
        FR(j, i, i + n) {
            if (s[0][j - i] == s[2][j % n]) {
                ok = false;
                break;
            }
        }
        if (ok) cnt[1][i] = 1;
    }
    FOR(i, n) {
        int ok = true;
        FR(j, i, i + n) {
            if (s[1][j - i] == s[2][j % n]) {
                ok = false;
                break;
            }
        }
        if (ok) cnt[2][i] = 1;
    }
    int mn = (1 << 25);
    FOR(i, n) {
        FOR(j, n) {
            int offset = j - i;
            if (offset < 0) offset += n;
            if (cnt[0][i] && cnt[1][j] && cnt[2][offset]) mn = min(mn, min(i, n - i) + min(j, n - j));
        }
    }
    FOR(i, n) {
        FOR(j, n) {
            int offset = j - i;
            if (offset < 0) offset += n;
            if (cnt[0][n - i] && cnt[1][offset] && cnt[2][j]) mn = min(mn, min(i, n - i) + min(j, n - j));
        }
    }
    FOR(i, n) {
        FOR(j, n) {
            int offset = j - i;
            if (offset < 0) offset += n;
            if (cnt[0][offset] && cnt[1][n - i] && cnt[2][n - j]) mn = min(mn, min(i, n - i) + min(j, n - j));
        }
    }
    if (mn == (1 << 25)) cout << "-1\n";
    else cout << mn << '\n';
}