#include<bits/stdc++.h>
#define LL long long
#define rep(i,a,b) for(int i=a,i##end=b;i<=i##end;++i)
#define drep(i,a,b) for(int i=a,i##end=b;i>=i##end;--i)
using namespace std;
const int M=205;
const int tx[]={-2,-2,-1,-1,1,1,2,2};
const int ty[]={1,-1,2,-2,2,-2,1,-1};
char s[M];

int atk1_x[M],atk1_y[M];
bool chk_atk1(int x,int y){
    if(atk1_x[x])return 1;
    if(atk1_y[y])return 1;
    return 0;
}
void add_atk1(int x,int y,int z){
    atk1_x[x]+=z;
    atk1_y[y]+=z;
}
int atk2_x[M],atk2_y[M];
bool chk_atk2(int x,int y){
    if(atk2_x[x+y])return 1;
    if(atk2_y[x-y+10])return 1;
    return 0;
}
void add_atk2(int x,int y,int z){
    atk2_x[x+y]+=z;
    atk2_y[x-y+10]+=z;
}
int atk3[M][M];
bool chk_atk3(int x,int y){
    if(atk3[x][y])return 1;
    return 0;
}
void add_atk3(int x,int y,int z){
    rep(i,0,7){
        int ix=x+tx[i];
        int iy=y+ty[i];
        if(ix<1 || ix>8 || iy<1 || iy>8)continue;
        atk3[ix][iy]+=z;
    }
}

int ask1_x[M],ask1_y[M];
bool chk_ask1(int x,int y){
    if(ask1_x[x])return 1;
    if(ask1_y[y])return 1;
    return 0;
}
void add_ask1(int x,int y,int z){
    ask1_x[x]+=z;
    ask1_y[y]+=z;
}
int ask2_x[M],ask2_y[M];
bool chk_ask2(int x,int y){
    if(ask2_x[x+y])return 1;
    if(ask2_y[x-y+10])return 1;
    return 0;
}
void add_ask2(int x,int y,int z){
    ask2_x[x+y]+=z;
    ask2_y[x-y+10]+=z;
}
int ask3[M][M];
bool chk_ask3(int x,int y){
    if(ask3[x][y])return 1;
    return 0;
}
void add_ask3(int x,int y,int z){
    rep(i,0,7){
        int ix=x+tx[i];
        int iy=y+ty[i];
        if(ix<1 || ix>8 || iy<1 || iy>8)continue;
        ask3[ix][iy]+=z;
    }
}
bool dfs(int p){
    rep(x,1,8)rep(y,1,8){
        if(chk_atk1(x,y))continue;
        if(chk_atk2(x,y))continue;
        if(chk_atk3(x,y))continue;
        if((s[p]=='R' || s[p]=='Q' || s[p]=='C' || s[p]=='M') && (chk_ask1(x,y)))continue;
        if((s[p]=='B' || s[p]=='Q' || s[p]=='A' || s[p]=='M') && (chk_ask2(x,y)))continue;
        if((s[p]=='A' || s[p]=='C' || s[p]=='M') && (chk_ask3(x,y)))continue;

        if(s[p]=='R' || s[p]=='Q' || s[p]=='C' || s[p]=='M')add_atk1(x,y,1);
        if(s[p]=='B' || s[p]=='Q' || s[p]=='A' || s[p]=='M')add_atk2(x,y,1);
        if(s[p]=='A' || s[p]=='C' || s[p]=='M')add_atk3(x,y,1);
        add_ask1(x,y,1);
        add_ask2(x,y,1);
        add_ask3(x,y,1);
        int res=dfs(p+1);
        if(s[p]=='R' || s[p]=='Q' || s[p]=='C' || s[p]=='M')add_atk1(x,y,-1);
        if(s[p]=='B' || s[p]=='Q' || s[p]=='A' || s[p]=='M')add_atk2(x,y,-1);
        if(s[p]=='A' || s[p]=='C' || s[p]=='M')add_atk3(x,y,-1);
        add_ask1(x,y,-1);
        add_ask2(x,y,-1);
        add_ask3(x,y,-1);
        if(res)return 0;
    }
    return 1;
}
int main(){
    scanf("%s",s+1);
    puts(dfs(1)?"Bob":"Alice");
    return 0;
}