#include<bits/stdc++.h>
using namespace std;
int main(){
ios::sync_with_stdio(false);
cin.tie(NULL);
string s;
bool res=true;
cin>>s;
for(int i=0; i<s.size(); ++i){
if(s[i]=='A' && s[i+1]=='A'){
res=false;
break;
}
else if(s[i]=='L' && s[i+1]=='L' && s[i+2]=='L'){
res=false;
break;
}
}
cout<<(res?"TRUE":"FALSE");
return 0;
}
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