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import java.util.*;

public class Main {

	public static void main(String[] args) {
		Scanner scn = new Scanner(System.in);
		int n = Integer.parseInt(scn.nextLine());
		while (n-- != 0) {
			String str = scn.nextLine(), s[] = str.split(" "), arr[][] = new String[s.length][2];
			for (int i = 0; i < s.length; i++) {
				arr[i][0] = s[i].substring(0, 1);
				arr[i][1] = s[i].substring(1);
			}
			for (int i = 0; i < arr.length - 1; i++) {
				for (int j = i + 1; j < arr.length; j++) {
					char c1[] = arr[i][0].toCharArray();
					char c2[] = arr[j][0].toCharArray();
					if (c1[0] == c2[0]) {
						int n1 = Integer.parseInt(arr[i][1]), n2 = Integer.parseInt(arr[j][1]);
						if (n1 < n2) {
							String temp = arr[i][0];
							arr[i][0] = arr[j][0];
							arr[j][0] = temp;
							temp = arr[i][1];
							arr[i][1] = arr[j][1];
							arr[j][1] = temp;
						}
					} else if (c1[0] < c2[0]) {
						String temp = arr[i][0];
						arr[i][0] = arr[j][0];
						arr[j][0] = temp;
						temp = arr[i][1];
						arr[i][1] = arr[j][1];
						arr[j][1] = temp;
					}
				}
			}
			for (int i = 0; i < arr.length; i++) {
				if (i != 0)
					System.out.print(" ");
				System.out.print(arr[i][0] + arr[i][1]);
			}
			System.out.println();
		}
	}
		/* 
    題目：ITSA Basic 題目13. 撲克牌大小
    作者：1010
    時間：西元 2016 年 7 月 */
}