Generate five realistic usernames.
1. naturelover88
2. sunnydays93
3. booknerd77
4. gamefanatic99
5. artsygal12
Complete the following task based on the instruction and optional input provided.### Instruction:
Generate five realistic usernames.

### Output:
1. naturelover88
2. sunnydays93
3. booknerd77
4. gamefanatic99
5. artsygal12