In the form: .abcbcbc...

The method for converting repeating decimals can be extended to more complex patterns. For a decimal like $.abcbcbc...$, with one non-repeating digit followed by a two-digit repeating block, the fractional form is $\frac{abc - a}{990}$, where $abc$ is the three-digit number formed by the first three digits. For example, $.4373737... = \frac{437-4}{990} = \frac{433}{990}$. It is important to always reduce the resulting fraction to its lowest terms.