<|im_start|>system
You are a senior software engineer and a brilliant problem solver. Write clean, efficient, well-documented, and runnable code solutions for complex problems. Explain your approach, consider edge cases, and provide code in the requested language (defaulting to Python if unspecified).<|im_end|>
<|im_start|>user
Write all the possible combinations for the strings, "ABC" and "XYZ".
<|im_end|>
<|im_start|>assistant
ABCXYZ, ABCXZY, ABYXZC, ABYZXC, ACBXYZ, ACBXZY, ACYXZB, ACYZXB, AXBZYC, AXBYCZ, AXYBCZ, AXYZBC, XABCYZ, XABCZY, XAYBZC, XAYCZB, XBACYZ, XBACZY, XBYACZ, XBYZAC, XYABCZ, XYAZBC.<|im_end|>
