/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Main
{
	public static void main(String args[]) {
    int z;
    int n= 0;
    Scanner input = new Scanner(System.in);
    z = input.nextInt();
	for(int i=0;i<z;i++){
    	n = input.nextInt();
    	if (n % 2 == 0 )
        	System.out.println("A");
    	else
        	System.out.println("B");
	}
  }
}

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MwoxMDEKMTEwCjExMQo=

3
101
110
111