/*

                   _ooOoo_
                  o8888888o
                  88" . "88
                  (| -_- |)
                  O\  =  /O
               ____/`---'\____
             .'  \\|     |//  `.
            /  \\|||  :  |||//  \
           /  _||||| -:- |||||-  \
           |   | \\\  -  /// |   |
           | \_|  ''\---/''  |   |
           \  .-\__  `-`  ___/-. /
         ___`. .'  /--.--\  `. . __
      ."" '<  `.___\_<|>_/___.'  >'"".
     | | :  `- \`.;`\ _ /`;.`/ - ` : | |
     \  \ `-.   \_ __\ /__ _/   .-` /  /
======`-.____`-.___\_____/___.-`____.-'======
                   `=---='
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                    prayer
*/

// g++ -std=c++11 a.cpp
#include<iostream>
#include<vector>
#include<string>
#include<algorithm>	
#include<map>
#include<set>
#include<unordered_map>
#include<utility>
#include<cmath>
#include<random>
#include<cstring>
#include<queue>
#include<stack>
#include<bitset>
#include<cstdio>
#include<sstream>
#include<iomanip>
#include<assert.h>
#include<typeinfo>
#define loop(i,a,b) for(int i=a;i<b;i++) 
#define rep(i,a) loop(i,0,a)
#define FOR(i,a) for(auto i:a)
#define pb push_back
#define all(in) in.begin(),in.end()
#define shosu(x) fixed<<setprecision(x)
#define show1d(v) rep(_,v.size())cout<<" "<<v[_];cout<<endl;
#define show2d(v) rep(__,v.size()){rep(_,v[__].size())cout<<" "<<v[__][_];cout<<endl;}
using namespace std;
//kaewasuretyuui
typedef long long llong;
#define int llong
typedef int Def;
typedef pair<Def,Def> pii;
typedef vector<Def> vi;
typedef vector<vi> vvi;
typedef vector<pii> vp;
typedef vector<vp> vvp;
typedef vector<string> vs;
typedef vector<double> vd;
typedef vector<vd> vvd;
typedef pair<Def,pii> pip;
typedef vector<pip>vip;
// #define mt make_tuple
// typedef tuple<int,int,int> tp;
// typedef vector<tp> vt;
template<typename A,typename B>bool cmin(A &a,const B &b){return a>b?(a=b,true):false;}
template<typename A,typename B>bool cmax(A &a,const B &b){return a<b?(a=b,true):false;}
//template<class C>constexpr int size(const C &c){return (int)c.size();}
//template<class T,size_t N> constexpr int size(const T (&xs)[N])noexcept{return (int)N;}
const double PI=acos(-1);
const double EPS=1e-9;
Def inf = sizeof(Def) == sizeof(long long) ? 2e18 : 1e9+10;
int dx[]={0,1,0,-1};
int dy[]={1,0,-1,0};
int x,n,l;
vs in;
int f(int a){
	if(!a)return 0;
	rep(i,99)if(a&1<<i)return 1<<i;
}
#define MAX 2
#define OFFSET '0'
struct Node{
	vi nxt; // 次のalphabeteのノード番号
	int exist; // 子ども以下に存在する文字列の数の合計
	vi accept; // その文字列id
	int dig;
	Node(int a) : dig(a),exist(0){nxt=vi(MAX+1,-1);}
};
struct Trie{
	vector<Node>nodes;
	int root;
	Trie() : root(0){nodes.push_back(Node(0));}

	void update_direct(int node,int id){
		nodes[node].accept.push_back(id);
	}
	void update_child(int node,int child,int id){
		++nodes[node].exist;
	}
	void add(const string &str,int str_index,int node_index,int id){
		if(str_index == str.size())
			update_direct(node_index, id);
		else{
			const int c = str[str_index] - OFFSET;
			if(nodes[node_index].nxt[c] == -1) {
				nodes[node_index].nxt[c] = (int) nodes.size();
				nodes.push_back(Node(str_index+1));
			}
			add(str, str_index + 1, nodes[node_index].nxt[c], id);
			update_child(node_index, nodes[node_index].nxt[c], id);
		}
	}
	void add(const string &str,int id){add(str, 0, 0, id);}
	void add(const string &str){add(str, nodes[0].exist);}
	int size(){return (nodes[0].exist);}
	int nodesize(){return ((int) nodes.size());}
};
signed main(){
	cin>>n>>l;
	in=vs(n);
	rep(i,n)cin>>in[i];
	sort(all(in));
	Trie trie;
	rep(i,n)trie.add(in[i]);
	rep(i,trie.nodesize()){
		if(trie.nodes[i].nxt[0]==-1)x^=f(l-trie.nodes[i].dig);
		if(trie.nodes[i].nxt[1]==-1)x^=f(l-trie.nodes[i].dig);
	}
	if(x)cout<<"Alice"<<endl;
	else cout<<"Bob"<<endl;
}















Measured memory_bytes: 14824