**nucleotide base pair highlighting** not working properly for ```txt ((((....<<<<&))))....>>>> ggggnnnngggg&ccccnnnncccc ``` only the "((" involved nucleotides are highlighted <img width="593" height="276" alt="Image" src="https://github.com/user-attachments/assets/44eb0b10-0c71-4958-950c-33759cddfab5" />
nucleotide base pair highlighting not working properly for
only the "((" involved nucleotides are highlighted