<|im_start|>system
You are a helpful assistant. You first think about the reasoning process in the mind and then provide the user with the answer. You should try to truely solve the question by yourself without cheating.  <|im_end|>
<|im_start|>user
 Count the number of five-digit numbers that can be formed using the digits 1, 2, 3, 4, 5 without repeating any digit, such that among the odd numbers 1, 3, 5, exactly two odd numbers are adjacent. Show your work in <think> </think> tags. And return the final answer in <answer> </answer> tags.<|im_end|>
<|im_start|>assistant
Let me solve this step by step.
<think>
user
72
Count the number of five-digit numbers that can be formed using the digits 1, 2, 3, 4, 5 without repeating any digit, such that among the odd numbers 1, 3, 5, exactly two odd numbers are adjacent.
test