#include <stdio.h>
#include <stdbool.h>
 
 
int main(void) {
	// scan input
	int n;
	scanf("%d",&n);
	int poetry[30][2][7];
	int i,j,k;
	for(i=0;i<n;i++)
		for(j=0;j<2;j++)
			for(k=0;k<7;k++)
				scanf("%d",&poetry[i][j][k]);
 
 
	//process data & print result
	bool disobey,A,B,C;
	for(i=0;i<n;i++){
		disobey=0;	
		A=B=C=0;     //(0代表遵守，1代表不遵守)
		//A rule
		A=poetry[i][0][1]==poetry[i][0][3]||poetry[i][1][1]==poetry[i][1][3]||
		  poetry[i][0][1]!=poetry[i][0][5]||poetry[i][1][1]!=poetry[i][1][5];
		if(A){
			printf("A");
			disobey=1;
		}
		//B rule
		B=poetry[i][0][6]!=1||poetry[i][1][6]!=0;
		if(B){
			printf("B");
			disobey=1;
		}
		//C rule
		C=poetry[i][0][1]==poetry[i][1][1]||
		  poetry[i][0][3]==poetry[i][1][3]||
		  poetry[i][0][5]==poetry[i][1][5];
		if(C){
			printf("C");
			disobey=1;
		}
	if(!disobey) printf("None");	
	if(i<n-1)  printf("\n");	
	}
	return 0;
}
 

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3
0 1 0 0 0 1 1
1 0 1 1 1 0 0
0 1 0 1 1 1 0
1 0 0 0 0 0 1 
0 1 0 0 1 1 1 
1 0 0 0 0 1 1