Prompt d'ambigramme figuratif multistable

2x2 grid, 16:9, AI picks subjects: Anchor: A single composition that reads as the word "{WORD}" in clean letterforms AND flips between two literal pictures - {SUBJECT_A} and {SUBJECT_B} - depending on how it is seen [e.g. sun / face], all readings sharing the exact same marks, none placed beside another ::4 Morphology: A tri-stable figurative ambigram. Derive the strokes that can simultaneously spell {WORD}, describe {SUBJECT_A}, and describe {SUBJECT_B}; anchor the marks where all three demands coincide and let ambiguity carry the rest. Each reading fully resolves, none dominant, every flip effortless once found ::3 Material Physics: Single fluid ink line on white, brush-calligraphy confidence, one mark serving all three readings - no separate outline ::3 Illumination: Flat, graphic - calligraphic ink on paper ::2 Render Stack: Multistable figurative ambigram, dual-image calligram, ink typography ::1 Negative: [any reading that only works in isolation, text beside image, the word unreadable, either subject unrecognizable, three things crudely overlaid] :: -1