#include <bits/stdc++.h>
#define fi first
#define se second
#define rep(i,n) for(int i = 0; i < (n); ++i)
#define rrep(i,n) for(int i = 1; i <= (n); ++i)
#define drep(i,n) for(int i = (n)-1; i >= 0; --i)
#define srep(i,s,t) for (int i = s; i < t; ++i)
#define rng(a) a.begin(),a.end()
#define maxs(x,y) (x = max(x,y))
#define mins(x,y) (x = min(x,y))
#define limit(x,l,r) max(l,min(x,r))
#define lims(x,l,r) (x = max(l,min(x,r)))
#define isin(x,l,r) ((l) <= (x) && (x) < (r))
#define pb push_back
#define sz(x) (int)(x).size()
#define pcnt __builtin_popcountll
#define uni(x) x.erase(unique(rng(x)),x.end())
#define snuke srand((unsigned)clock()+(unsigned)time(NULL));
#define show(x) cout<<#x<<" = "<<x<<endl;
#define PQ(T) priority_queue<T,v(T),greater<T> >
#define bn(x) ((1<<x)-1)
#define dup(x,y) (((x)+(y)-1)/(y))
#define newline puts("")
#define v(T) vector<T>
#define vv(T) v(v(T))
using namespace std;
typedef long long int ll;
typedef unsigned uint;
typedef unsigned long long ull;
typedef pair<int,int> P;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<ll> vl;
typedef vector<P> vp;
inline int in() { int x; scanf("%d",&x); return x;}
template<typename T>inline istream& operator>>(istream&i,v(T)&v)
{rep(j,sz(v))i>>v[j];return i;}
template<typename T>string join(const v(T)&v)
{stringstream s;rep(i,sz(v))s<<' '<<v[i];return s.str().substr(1);}
template<typename T>inline ostream& operator<<(ostream&o,const v(T)&v)
{if(sz(v))o<<join(v);return o;}
template<typename T1,typename T2>inline istream& operator>>(istream&i,pair<T1,T2>&v)
{return i>>v.fi>>v.se;}
template<typename T1,typename T2>inline ostream& operator<<(ostream&o,const pair<T1,T2>&v)
{return o<<v.fi<<","<<v.se;}
template<typename T>inline ll suma(const v(T)& a) { ll res(0); for (auto&& x : a) res += x; return res;}
const double eps = 1e-10;
const ll LINF = 1001002003004005006ll;
const int INF = 1001001001;
#define dame { puts("-1"); return 0;}
#define yn {puts("YES");}else{puts("NO");}
int dx[] = {0, 1, 0, -1}, dy[] = {1, 0, -1, 0};
//////////////////////////////////////////////////

// const int MX = 2005;
// bool d[3][3][MX];
//
// int main() {
//     vector<string> s(3);
//     rep(i,3) cin >> s[i];
//     sort(s.begin(), s.end());
//     int ans = INF;
//     do {
//         rep(i, 3) rep(j, 3) rep(k, s[i].size()) {
//             if (i >= j) continue;
//             bool ok = true;
//             for (int ni = k; ni < s[i].size(); ++ni) {
//                 int nj = ni - k;
//                 if (nj >= s[j].size()) break;
//                 if (s[i][ni] == '?' || s[j][nj] == '?') continue;
//                 if (s[i][ni] != s[j][nj]) ok = false;
//             }
//             d[i][j][k] = ok;
//         }
//
//         auto f = [&](int i, int j, int k) {
//             if (k >= s[i].size()) return true;
//             return d[i][j][k];
//         };
//
//         rep(x, MX) rep(y, MX) {
//             if (!f(0, 1, x)) continue;
//             if (!f(1, 2, y)) continue;
//             if (!f(0, 2, x + y)) continue;
//             int now = 0; 
//             now = max<int>(now, s[0].size());
//             now = max<int>(now, x+s[1].size());
//             now = max<int>(now, x+y+s[2].size());
//             ans = min(ans, now);
//         }
//     } while(next_permutation(s.begin(), s.end()));
//     cout << ans << endl;
//     return 0;
// }
//

bool f(char x, char y) {
    return x == '?' || y == '?' || x == y;
}

bool ab[10005], ac[10005], bc[10005];

int main() {
    string a, b, c;
    cin >> a >> b >> c;
    int A = a.size(); 
    int B = b.size(); 
    int C = c.size(); 
    rep(i, A) rep(j, B) if (!f(a[i], b[j])) ab[i - j + 5000] = true;
    rep(i, A) rep(j, C) if (!f(a[i], c[j])) ac[i - j + 5000] = true;
    rep(i, B) rep(j, C) if (!f(b[i], c[j])) bc[i - j + 5000] = true;
    int ans = INF;
    for (int i = -4000; i <= 4000; i++) for (int j = -4000; j <= 4000; j++) {
        if (!ab[i + 5000] && !ac[j + 5000] && !bc[j - i + 5000]) {
            int l = min(0, min(i, j));
            int r = max(A, max(B + i, C + j));
            ans = min(ans, r - l);
        }
    }
    cout << ans << endl;
    return 0;
}


Measured memory_bytes: 384