import java.util.Arrays;
import java.util.Scanner;

public class Lab {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        String[] input = scanner.nextLine().split(", ");
        int size = Integer.parseInt(input[0]);
        String type = input[1];
        int[][] matrix = new int[size][size];//


        if (type.equals("A")) {
            matrix = generatematrixWithPatternA(size);
        } else if (type.equals("B")) {
            matrix = generatematrixWithPatternB(size);
        }
        printMatrix(matrix);
    }

    private static void printMatrix(int[][] matrix) {
        for (int roww = 0; roww < matrix.length; roww++) {
            for (int coll = 0; coll < matrix[roww].length; coll++) {
                System.out.print(matrix[roww][coll] + " ");
            }
            System.out.println();
        }
    }

    private static int[][] generatematrixWithPatternB(int size) {
        int[][] matrix = new int[size][size];
        int value2 = 1;
        for (int col = 0; col < size; col++) {
            if (col % 2 == 0) {
                for (int row = 0; row < size; row++) {
                    matrix[row][col] = value2;
                    value2++;
                }
            } else {
                for (int row2 = size - 1; row2 >= 0; row2--) {
                    matrix[row2][col] = value2;
                    value2++;
                }
            }
        }
        return matrix;
    }

    private static int[][] generatematrixWithPatternA(int size) {
        int[][] matrix = new int[size][size];
        int value = 1;
        for (int col = 0; col < size; col++) {
            for (int rol = 0; rol < size; rol++) {
                matrix[rol][col] = value;
                value++;
            }
        }
        return matrix;
    }
}