Amplitude spectrum of TIC 308396022, with the fundamental mode removed. The vertical dark-gray dotted line marks the location of the fundamental mode f₁, and the light-gray dotted lines mark the first and the second overtones, f₂ and f₃. The dark shaded area shows the g-mode region, while the light shaded areas around f₁ and 2f₁ show the combinations between the fundamental mode and the g modes: f₁ + g, f₁ − g, 2f₁ + g, and 2f₁ − g.