#include <iostream>
#include <vector>
 
using namespace std;
 
// Define the steps and substeps
vector<string> steps = {"Step 1", "Step 2", "Step 3", "Step 4"};
vector<string> substeps = {"Substep 1", "Substep 2", "Substep 3", "Substep 4"};
 
// Create a function to stitch the steps and substeps together
void stitch(vector<string>& steps, vector<string>& substeps) {
  // Iterate through the steps
  for (string step : steps) {
    // Iterate through the substeps
    for (string substep : substeps) {
      // Stitch the step and substep together
      steps.push_back(step + " " + substep);
    }
  }
}
 
// Create a main function
int main() {
  // Stitch the steps and substeps together
  stitch(steps, substeps);
 
  // Print the steps
  for (string step : steps) {
    cout << step << endl;
  }
 
  return 0;
}

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