Problem

Chef invented a modified wordle.

There is a hidden word  and a guess word , both of length 5.

Chef defines a string  to determine the correctness of the guess word. For the ��ℎ index:

• If the guess at the ��ℎ index is correct, the ��ℎ character of  is G.
• If the guess at the ��ℎ index is wrong, the ��ℎ character of  is B.

Given the hidden word  and guess , determine string .

Input Format

• First line will contain , number of test cases. Then the test cases follow.
• Each test case contains of two lines of input.
• First line contains the string  - the hidden word.
• Second line contains the string  - the guess word.

Output Format

For each test case, print the value of string .

You may print each character of the string in uppercase or lowercase (for example, the strings BgBgBBGBGBbgbGB and bgbgb will all be treated as identical).

Constraints

• 1≤�≤1000
• ∣�∣=∣�∣=5
• �,� contain uppercase english alphabets only.

Sample 1:

Input

Output

3
ABCDE
EDCBA
ROUND
RINGS
START
STUNT

BBGBB
GBBBB
GGBBG


Explanation:

Test Case 1: Given string �=ABCDE and �=EDCBA. The string  is:

• Comparing the first indices, A≠E, thus, �[1]=B.
• Comparing the second indices, B≠D, thus, �[2]=B.
• Comparing the third indices, C=C, thus, �[3]=G.
• Comparing the fourth indices, D≠B, thus, �[4]=B.
• Comparing the fifth indices, E≠A, thus, �[5]=B.
Thus, �=BBGBB.

Test Case 2: Given string �=ROUND and �=RINGS. The string  is:

• Comparing the first indices, R=R, thus, �[1]=G.
• Comparing the second indices, O≠I, thus, �[2]=B.
• Comparing the third indices, U≠N, thus, �[3]=B.
• Comparing the fourth indices, N≠G, thus, �[4]=B.
• Comparing the fifth indices, D≠S, thus, �[5]=B.
Thus, �=GBBBB.

Code Examples

#1 Code Example with C Programming

Code - C Programming

 #include<stdio.h>
int main()
{
int t,i;
char a[5],b[5];
scanf("%d",&t);
while(t--)
{
scanf("%s %s",a,b);
for(i=0;i < 5;i++)
{
if(a[i]==b[i])  printf("G");
else printf("B");
}
printf("\n");
}
} 
Copy The Code &

Input

cmd
3
ABCDE
EDCBA
ROUND
RINGS
START STUNT

Output

cmd
BBGBB
GBBBB
GGBBG