#include <bits/stdc++.h>
using namespace std;
inline int go(int v, int w) {
  if (w == 0) {
    if (v != 2 && v != 6 && v != 11 && v != 15 && v != 18)
      return v + 1;
    else
      return -1;
  } else if (w == 1) {
    if (v == 7 || v == 12 || v > 15)
      return -1;
    else if (v < 3)
      return v + 3;
    else if (v < 7)
      return v + 4;
    else if (v < 12)
      return v + 4;
    else
      return v + 3;
  } else {
    if (v == 11 || v > 14)
      return -1;
    else if (v < 3)
      return v + 4;
    else if (v < 7)
      return v + 5;
    else if (v < 12)
      return v + 5;
    else
      return v + 4;
  }
}
int f[1 << 19];
int dfs(int mask) {
  if (~f[mask]) return f[mask];
  for (int(i) = 0; (i) < (19); ++(i))
    if (mask & (1 << i)) {
      int nxt = mask - (1 << i);
      if (!dfs(nxt)) return f[mask] = 1;
      for (int(w) = 0; (w) < (3); ++(w)) {
        int cpy = nxt;
        int j = go(i, w);
        while (j != -1 && (cpy & (1 << j))) {
          cpy -= (1 << j);
          if (!dfs(cpy)) return f[mask] = 1;
          j = go(j, w);
        }
      }
    }
  return f[mask] = 0;
}
int main() {
  memset(f, -1, sizeof(f));
  f[0] = 0;
  int st = 0;
  for (int(i) = 0; (i) < (19); ++(i)) {
    char ch;
    cin >> ch;
    if (ch == 'O') st |= (1 << i);
  }
  if (!dfs(st))
    cout << "Lillebror\n";
  else
    cout << "Karlsson\n";
}
