sentences: lichens something off of something else is a length of example for removing something from something else
docs: lichen is fungus. rock_gnome_lichen is lichen. lichen is living_organism. parmelia_lichen is lichen. graphis_alboscripta is lichen. lichenales is fungus_order. pseudevernia_furfuracea is lichen. beard_lichen is lichen. map_lichen is lichen. lichen is skin_disease.