Create an appropriate input to the command to produce the output.
Command: "List all the words starting with letter 'A'."
Output: 
Apple, air, animal, Astronaut
Input: ["Apple", "air", "animal", "Astronaut", "banana", "bus", "couch", "dog", "elephant"]
Complete the following task based on the instruction and optional input provided.### Instruction:
Create an appropriate input to the command to produce the output.

### Input:
Command: "List all the words starting with letter 'A'."
Output: 
Apple, air, animal, Astronaut

### Output:
Input: ["Apple", "air", "animal", "Astronaut", "banana", "bus", "couch", "dog", "elephant"]