Firmware Update Failure
Alternatively, maybe the user wants any time there's a phrase that includes an acronym with two full forms, but that's only two. The user might have a mistake in their example. Let me look at the sample input and output again. The user provided a text and the expected output includes replacing certain terms in opt3 format. Zte F680 Firmware
But the user's example uses "ftth ftth". Wait, maybe the user wants to expand acronyms as well. For instance, "fiber-to-the-home (FTTH) optical network terminal (ONT) device" – the three options would be FTTH, ONT, and the full form "optical network terminal". But that's two terms. Hmm. Firmware Update Failure Alternatively, maybe the user wants