#include <stdio.h>
#include <string.h>
int main() {
    int T;
    scanf("%d", &T);
    for (int t = 1; t <= T; t++) {
        int N;
        scanf("%d", &N);
        char B[N + 1]; // Adding one for null terminator
        scanf("%s", B);
        int countR = 0, countG = 0, countB = 0;
        for (int i = 0; i < N; i++) {
            if (B[i] == 'R')
                countR++;
            else if (B[i] == 'G')
                countG++;
            else if (B[i] == 'B')
                countB++;}
        // Checking if counts are equal
        if (countR == countG && countG == countB)
            printf("Harmonious\n");
        else
            printf("Not Harmonious\n");
    }
 
    return 0;
}