Lena was tasked with building a layout previewer for the team's new dashboard builder, which uses pairs of parentheses to group different data widgets. To ensure the rendering engine could handle every possible configuration, Mark asked her to write a utility that lists every valid way these groups can be nested or sequenced. For instance, if a user wants to organize three sets of widgets, the utility should suggest arrangements like three separate pairs or a single set of three nested groups. This small helper will now serve as the logic for the platform's automated grouping suggestions.