#include <iostream>
#include <cstdio>
#include <cstring>
using namespace std;
 
int main() {
	int t, n, b[205], cnt;
	char s[205];
	scanf("%d", &t);
	while(t--) {
		scanf("%s", s);
		n=strlen(s); cnt=0;
		for(int i=0; i<n; i++) b[i]=1;
		for(int i=0; i<n-1; i++) {
			if(b[i]==0) continue;
			for(int j=i+1; j<n; j++) {
				if(s[i]==s[j]) { b[j]=0; break; }
			}
		}
		for(int i=0; i<n; i++) cnt += b[i];
		printf("%d\n", cnt);
	}
	return 0;
}

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

NApzc3NzCnNzYXMKc2EKcw==

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