#include <bits/stdc++.h>
#define FOR(i, a, b) for(int i = a; i <= b; ++i)
using namespace std;
#define ull unsigned long long
string s;
map<ull,int> mp[20];
int in(ull S,int bit) {return (S>>bit)&1;}
int pd(int x,int y) {return 0<=x and x<8 and 0<=y and y<8;}
void ban_car(ull &S,int x,int y) {
    FOR(i,0,7) S|=1ull<<(i*8+y);
    FOR(i,0,7) S|=1ull<<(x*8+i);
}
void ban_xiang(ull &S,int x,int y) {
    FOR(i,0,7) if(pd(i,x+y-i)) S|=1ull<<(i*8+x+y-i);
    FOR(i,0,7) if(pd(i,y-x+i)) S|=1ull<<(i*8+y-x+i);
}
void ban_horse(ull &S,int x,int y) {
    for(auto i:{-2,2}) for(auto j:{-1,1}) {
        if(pd(x+i,y+j)) S|=1ull<<((x+i)*8+(y+j));
        if(pd(x+j,y+i)) S|=1ull<<((x+j)*8+(y+i));
    }
}
void get_car(ull &tot,ull S,int x,int y) {
    FOR(i,0,7) tot+=in(S,(i*8+y));
    FOR(i,0,7) tot+=in(S,(x*8+i));
}
void get_xiang(ull &tot,ull S,int x,int y) {
    FOR(i,0,7) if(pd(i,x+y-i)) tot+=in(S,(i*8+x+y-i));
    FOR(i,0,7) if(pd(i,y-x+i)) tot+=in(S,(i*8+y-x+i));
}
void get_horse(ull &tot,ull S,int x,int y) {
    for(auto i:{-2,2}) for(auto j:{-1,1}) {
        if(pd(x+i,y+j)) tot+=in(S,((x+i)*8+(y+j)));
        if(pd(x+j,y+i)) tot+=in(S,((x+j)*8+(y+i)));
    }
}
void debug(ull S) {
    FOR(i,0,7) {
        FOR(j,0,7) cout<<in(S,i*8+j);
        cout<<"\n";
    }cout<<"\n";
}
int sg(ull S,int now) {
    if(mp[now].count(S)) return mp[now][S];
    FOR(i,0,7) FOR(j,0,7) if(in(S,i*8+j)==0) {
        ull T=S|(1ull<<(i*8+j)),tot=0;
        if(s[now]=='B') get_xiang(tot,S,i,j);
        if(s[now]=='R') get_car(tot,S,i,j);
        if(s[now]=='Q') get_car(tot,S,i,j),  get_xiang(tot,S,i,j);
        if(s[now]=='A') get_xiang(tot,S,i,j),get_horse(tot,S,i,j);
        if(s[now]=='C') get_car(tot,S,i,j),  get_horse(tot,S,i,j);
        if(s[now]=='M') get_car(tot,S,i,j),  get_xiang(tot,S,i,j),get_horse(tot,S,i,j);
        if(tot) continue;
        if(s[now]=='B') ban_xiang(T,i,j);
        if(s[now]=='R') ban_car(T,i,j);
        if(s[now]=='Q') ban_car(T,i,j),  ban_xiang(T,i,j);
        if(s[now]=='A') ban_xiang(T,i,j),ban_horse(T,i,j);
        if(s[now]=='C') ban_car(T,i,j),  ban_horse(T,i,j);
        if(s[now]=='M') ban_car(T,i,j),  ban_xiang(T,i,j),ban_horse(T,i,j);
        if(sg(T,now+1)==0) return mp[now][S]=1,1;
    }
    return mp[now][S]=0,0;
}
signed main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cin>>s;
    if(sg(0,0)) cout<<"Alice\n";
    else cout<<"Bob\n";
    return 0;
}