1. **rightl0 (L-shaped piece)**     - **Shape:** L-shaped, composed of three connected squares.     - **Position:** No constraints on position.     - **Size:** Spans vertically (2 height) and horizontally (2 width) in an L-shape.     - **Status:** Color is blue; outer edges are bold.     - **Text Identifiers:** "rightl0" positioned in each sub-square.2. **straight0 (Two-square straight piece)**     - **Shape:** Straight line, composed of two connected squares.     - **Position:** No constraints on position.     - **Size:** Spans vertically (2 height) in a straight line.     - **Status:** Color is orange; outer edges are bold.     - **Text Identifiers:** "straight0" positioned in each sub-square.3. **straight1 (Two-square straight piece)**     - **Shape:** Straight line, composed of two connected squares.     - **Position:** No constraints on position.     - **Size:** Spans vertically (2 height) in a straight line.     - **Status:** Color is purple; outer edges are bold.     - **Text Identifiers:** "straight1" positioned in each sub-square.4. **straight2 (Two-square straight piece)**     - **Shape:** Straight line, composed of two connected squares.     - **Position:** No constraints on position.     - **Size:** Spans vertically (2 height) in a straight line.     - **Status:** Color is green; outer edges are bold.     - **Text Identifiers:** "straight2" positioned in each sub-square.5. **square0 (One-square piece)**     - **Shape:** Single square.     - **Position:** No constraints on position.     - **Size:** Single unit.     - **Status:** Color is red; all edges are bold.     - **Text Identifiers:** "square0" positioned slightly higher in the square.6. **square1 (One-square piece)**     - **Shape:** Single square.     - **Position:** No constraints on position.     - **Size:** Single unit.     - **Status:** Color is yellow; all edges are bold.     - **Text Identifiers:** "square1" positioned slightly higher in the square.7. **Grid Cells (Unoccupied)**     - **Shape:** Rectangular grid composed of individual squares.     - **Position:** Covers positions f0-0f to f0-3f, f1-0f to f1-3f, f2-0f to f2-3f.     - **Size:** Single unit for each grid cell.     - **Status:** Clear (no color).     - **Text Identifiers:** Each position marked with text (e.g., "f0-0f") located at the center of the square and labeled as "clear".Overall summary:  - The Tetris grid is a 6-row by 4-column structure, with the goal of clearing the first three rows. All pieces initially located in these rows must be moved downward into lower rows (rows 3, 4, or 5) to achieve this goal. Each piece is given a unique color for clarity, and the outer edges of each piece are bolded to distinguish them from the inner lines of the grid. Position identifiers and text are carefully positioned to ensure clear visibility and avoid overlap.