#include <bits/stdc++.h>
using namespace std;
const int maxl = 15;
int llen[maxl] = {3, 4, 5, 4, 3, 3, 4, 5, 4, 3, 3, 4, 5, 4, 3};
int lines[maxl][5] = {
    {0, 1, 2},         {3, 4, 5, 6},    {7, 8, 9, 10, 11}, {12, 13, 14, 15},
    {16, 17, 18},      {7, 12, 16},     {3, 8, 13, 17},    {0, 4, 9, 14, 18},
    {1, 5, 10, 15},    {2, 6, 11},      {7, 3, 0},         {12, 8, 4, 1},
    {16, 13, 9, 5, 2}, {17, 14, 10, 6}, {18, 15, 11},
};
const int maxs = 1 << 19;
char dp[maxs];
int win(int st) {
  if (dp[st] != -1) return dp[st];
  for (int i = 0; i < maxl; i++)
    for (int l = 0; l < llen[i]; l++)
      for (int r = l; r < llen[i]; r++) {
        bool can = true;
        for (int j = l; j <= r; j++)
          if (((st >> lines[i][j]) & 1) == 0) {
            can = false;
            break;
          }
        if (can) {
          int to = st;
          for (int j = l; j <= r; j++) to &= ~(1 << lines[i][j]);
          if (win(to) == 0) return (dp[st] = 1);
        }
      }
  return (dp[st] = 0);
}
int main() {
  memset(dp, -1, sizeof(dp));
  int st = 0;
  string s;
  for (int i = 0; i < 19; i++) {
    cin >> s;
    if (s == "O") st |= (1 << i);
  }
  int r = win(st);
  printf("%s\n", r == 0 ? "Lillebror" : "Karlsson");
  return 0;
}
