Step 1: Direct sand from the top-left source towards the center.
Draw a long horizontal line starting from just below the top-left sand source, extending to the right, passing above the central rotating obstacle.
Sand from the top-left source flows along the drawn line towards the right.
Step 2: Guide sand into the top-right receptacle.
Draw a short diagonal line above and to the left of the top-right receptacle, connecting to the sand flow path from Step 1, to direct sand downwards into the receptacle.
Sand begins to fill the top-right receptacle.
Step 3: Direct sand from the top-right source downwards.
Draw a short vertical line just below the top-right sand source, guiding its sand downwards and slightly left.
Sand from the top-right source begins to flow along this new line.
Step 4: Guide sand into the middle receptacle.
Draw a small, slightly curved line below the path from Step 3, directing sand into the middle receptacle.
Sand begins to fill the middle receptacle.
Step 5: Direct sand from the bottom-left source towards the bottom-right.
Draw a long diagonal line starting from below the bottom-left sand source, extending upwards and to the right, creating a channel.
Sand from the bottom-left source flows along this newly created channel.
Step 6: Guide sand into the bottom receptacle.
Draw a short horizontal line just above the bottom receptacle, connecting to the channel from Step 5, directing sand downwards.
Sand begins to fill the bottom receptacle.