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Fano resonances in plasmonic nanostructures have asymmetric line shape and sharp resonance, and they are very attractive for biosensing applications.The implementations of biosensing rely on plasmon line shape engineering.In this work, we report that when the symmetry of a hexamer is lowered to D2h point group, two B3u and two B2u dark subradiant modes are excited, and there are four kinds of Fano resonances.