import java.io.*;

/**
 * A wrong solution for Assessment Disruption.
 * This solution generates antichains.
 */
public class assessment_mb_antichain {
    private static final int MAX_WORD_COUNT = 10000;

    public static void main(String[] args) throws IOException {
        try (BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
             PrintWriter out = new PrintWriter(System.out)) {
            String test = in.readLine();
            int wsIndex = test.indexOf(' ');
            int n = Integer.parseInt(test.substring(0, wsIndex));
            int wordCount = Integer.parseInt(test.substring(wsIndex + 1));

            for (int i = 0; i < n; ++i) {
                int x = i;
                int y = n - i;
                // x >= 0, being minimised, maps to word count being closest to wordCount
                // Note that the word count must never exceed 10000, so we choose the side wisely
                int myWordCount = wordCount + x <= MAX_WORD_COUNT ? wordCount + x : wordCount - x;
                // y >= 0, y <= n, being minimised, maps to quality maximized
                int quality = n - y;
                out.println(myWordCount + " " + quality);
            }
        }
    }
}