Step by step 4 steps
  1. Step 1

    Start

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  2. Step 2

    Option 1

    O1O2O3O4O5O6O7D1D2D3D4D5D6D7
  3. Step 3

    Option 1 Continud

    O1O2O3O4O5O6O7D1D2D3D4D5D6D7
  4. Step 4
    O1O2O3O4O5O6O7D1D2D3D4D5D6D7