#include <bits/stdc++.h>
using namespace std;
vector<vector<long long>> posib;
const long long MASK = 1 << 19;
long long dp[MASK];
bool used[MASK];
long long mex(vector<long long> &s) {
  long long n = s.size();
  vector<bool> marked(n, false);
  for (long long i = 0; i < s.size(); i++) {
    if (s[i] < n) marked[s[i]] = true;
  }
  for (long long x = 0; x < n; x++) {
    if (!marked[x]) return x;
  }
  return n;
}
int getBit(long long mask, long long i) { return (mask >> i) & 1; }
void turnOff(long long &mask, long long i) { mask = mask & (~(1 << i)); }
long long grundy(long long mask) {
  if (mask == 0) return 0;
  if (used[mask]) return dp[mask];
  used[mask] = true;
  vector<long long> s;
  for (vector<long long> move : posib) {
    for (long long i = 0; i < move.size(); i++) {
      if (getBit(mask, move[i]) == 1) {
        long long curMask = mask;
        for (long long j = i; j < move.size(); j++) {
          if (getBit(mask, move[j]) == 1) {
            turnOff(curMask, move[j]);
            s.push_back(grundy(curMask));
          } else {
            break;
          }
        }
      }
    }
  }
  return dp[mask] = mex(s);
}
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
  posib.push_back({1, 2, 3});
  posib.push_back({4, 5, 6, 7});
  posib.push_back({8, 9, 10, 11, 12});
  posib.push_back({13, 14, 15, 16});
  posib.push_back({17, 18, 19});
  posib.push_back({1, 4, 8});
  posib.push_back({2, 5, 9, 13});
  posib.push_back({3, 6, 10, 14, 17});
  posib.push_back({7, 11, 15, 18});
  posib.push_back({12, 16, 19});
  posib.push_back({8, 13, 17});
  posib.push_back({4, 9, 14, 18});
  posib.push_back({1, 5, 10, 15, 19});
  posib.push_back({2, 6, 11, 16});
  posib.push_back({3, 7, 12});
  for (auto &p : posib) {
    for (long long &x : p) {
      x--;
    }
  }
  long long mask = (1 << 19) - 1;
  for (long long i = 0; i < 19; i++) {
    char c;
    cin >> c;
    if (c == '.') {
      turnOff(mask, i);
    }
  }
  if (grundy(mask) == 0) {
    cout << "Lillebror";
  } else {
    cout << "Karlsson";
  }
  return 0;
}
