Identify the most common word used in the following paragraph.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed quis risus erat. Quisque eget facilisis velit.
The most common word used in the given paragraph is "quis" which appears two times.
Complete the following task based on the instruction and optional input provided.### Instruction:
Identify the most common word used in the following paragraph.

### Input:
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed quis risus erat. Quisque eget facilisis velit.

### Output:
The most common word used in the given paragraph is "quis" which appears two times.