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A.cpp
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#include<bits/stdc++.h>
using namespace std;
#define fo(i,n) for(i=0;i<n;i++)
#define fo2(i,start,end) for(i=start;i<=end;i++)
#define rfo(i,n) for(i=n-1;i>=0;i--)
#define lli long long int
#define deb(x) cout<<#x<<"="<<x<<endl
#define deb2(x,y) cout<<#x<<"="<<x<<","<<#y<<"="<<y<<endl
#define pb push_back
#define mp make_pair
#define F first
#define S second
#define tr(it,a) for(auto it=a.begin(); it!=a.end();it++)
#define nl '\n'
#define PI 3.141592653589793238
#define mod 1e9+7
void solve(){
int i,j;
string s;
cin>>s;
int a=0,b=0,c=0,n,temp;
char ch;
n=s.size();
fo(i,n){
if(s[i]=='A'){
a++;
}
else if(s[i]=='B'){
b++;
}
else if(s[i]=='C'){
c++;
}
}
ch=s[0];
// deb(ch);
if(a==b+c){
temp=0;
fo(i,n){
if(s[i]=='A'){
temp++;
}
else{
temp--;
}
if(temp<0 && ch=='A'){
break;
}
if(temp>0 && ch!='A'){
break;
}
}
if(temp==0){
cout<<"YES\n";
return;
}
}
if(b==a+c){
temp=0;
fo(i,n){
if(s[i]=='B'){
temp++;
}
else{
temp--;
}
if(temp<0 && ch=='B'){
break;
}
if(temp>0 && ch!='B'){
break;
}
}
if(temp==0){
cout<<"YES\n";
return;
}
}
if(c==a+b){
temp=0;
fo(i,n){
if(s[i]=='C'){
temp++;
}
else{
temp--;
}
if(temp<0 && ch=='C'){
break;
}
if(temp>0 && ch!='C'){
break;
}
}
if(temp==0){
cout<<"YES\n";
return;
}
}
cout<<"NO\n";
}
int main(){
ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);
int t=1;
cin>>t;
while(t--){
solve();
}
return 0;
}