Educational textbook cheat-sheet page in Russian language school workbook style, identical in layout and visual design to the reference cheat sheet pages. Clean white page with thin dark outer border. At the very top, large handwritten red header title: 'ГРАММАТИЧЕСКАЯ ОСНОВА'. Below the title: definition paragraph explaining subject and predicate with underlined examples. In the center: structured rounded-corner tables with black borders containing neat Russian typography with columns 'Чем выражено', 'Пример из текстов', 'Пояснение' explaining subjects (Подлежащее) and predicates (ПГС, СГС, СИС). At the bottom: a dashed/dotted rounded box labeled 'Задание' with example sentences and handwritten-style markings and a small hand-drawn vintage ink pot and quill feather illustration in the corner. Bottom center shows a grey oval page number badge '10'. Clear, high-resolution graphic design, crisp educational layout, vector-like illustration style.
