package chelper;

import io.InputReader;
import io.OutputWriter;
import misc.SimpleSavingChelperSolution;


public class TaskB extends SimpleSavingChelperSolution {

  public void solve(int testNumber, InputReader in, OutputWriter out) {
    wrapSolve(testNumber, in, out);
  }

  @Override
  public void solve(int testNumber) {
    long l = in.nextLong();
    long r = in.nextLong();

    out.println("YES");

    for (long i = l; i <= r; i += 2) {
      out.println(i + " " + (i + 1));
    }
  }
}