| subgroup_id | base_bg_id | members | generation_chain | conf | reason |
|---|
| L01_main | L01B01 | L01B01 | L01B01 | high | This subgroup contains a single independent background entry depicting an overgrown forest path. |
| L02_main | L02B01 | L02B01 | L02B01 | high | This subgroup contains a single independent background depicting a dark alley with a utility pole. |
| L03_main | L03B01 | L03B01 | L03B01 | high | This subgroup consists of a single independent background depicting an outdoor crime scene forensics area. |
| L04_main | L04B02 | L04B01, L04B02, L04B03 | L04B02 -> L04B03 -> L04B01 | high | These entries depict different sections and views of the same villa rooftop, forming a sequential chain of spatial and lighting variants. |
| L05_main | L05B02 | L05B01, L05B02, L05B03, L05B04, L05B05 | L05B02 -> L05B01 -> L05B03 -> L05B04 -> L05B05 | high | These entries represent different spaces, states, and conditions within the same rooftop apartment interior, mapped to a single continuity group. |
| L06_main | L06B01 | L06B01, L06B02 | L06B01 -> L06B02 | high | These entries show the same coastal road under different times of day and weather conditions. |
| L07_main | L07B01 | L07B01 | L07B01 | high | This subgroup contains a single independent background depicting the interior of an animal shelter. |
| L08_main | L08B02 | L08B01, L08B02 | L08B02 -> L08B01 | high | These entries depict the exterior frontage and awning of the same retail mart under different lighting conditions. |
| L09_main | L09B01 | L09B01 | L09B01 | high | This subgroup contains a single independent background of the retail mart's interior shopping aisle. |
| L10_main | L10B01 | L10B01 | L10B01 | high | This subgroup contains a single independent background showing the interior of an administration office. |
| L11_exterior | L11B01 | L11B01 | L11B01 | high | This subgroup contains a single independent background showing a rooftop stairwell landing space. |
| L12_main | L12B01 | L12B01 | L12B01 | high | This subgroup contains a single independent background of a coastal bus stop shelter at night. |
| L13_main | L13B02 | L13B01, L13B02 | L13B02 -> L13B01 | high | These entries depict the same police department desk setup during day and night shifts. |
| L14_main | L14B01 | L14B01 | L14B01 | high | This subgroup contains a single independent background of a concrete institutional building entrance. |
| L15_main | L15B01 | L15B01 | L15B01 | high | This subgroup contains a single independent background representing a computer cubicle room. |
| L16_main | L16B01 | L16B01 | L16B01 | high | This subgroup contains a single independent background of a deserted harbor quay edge. |
| L17_main | L17B01 | L17B01 | L17B01 | high | This subgroup contains a single independent background depicting the deck of a fishing boat. |
| L18_main | L18B01 | L18B01 | L18B01 | high | This subgroup contains a single independent background of a boat's interior wheelhouse. |
| L19_main | L19B01 | L19B01 | L19B01 | high | This subgroup contains a single independent background depicting an open sea view with a fog wall. |