1. **rightl0 (L-shaped piece)**     - **Shape:** L-shaped, composed of three connected squares.     - **Position:** Occupies positions f3-0f, f4-0f, and f4-1f.     - **Size:** Spans vertically (2 height) and horizontally (2 width) in an L-shape.     - **Status:** Color is blue; outer edges are bold; occupied.     - **Text Identifiers:** "rightl0" positioned in each sub-square.2. **straight0 (Two-square straight piece)**     - **Shape:** Straight line, composed of two connected squares.     - **Position:** Occupies positions f2-0f and f3-1f.     - **Size:** Spans vertically (2 height) in a straight line.     - **Status:** Color is orange; outer edges are bold; occupied.     - **Text Identifiers:** "straight0" positioned in each sub-square.3. **straight1 (Two-square straight piece)**     - **Shape:** Straight line, composed of two connected squares.     - **Position:** Occupies positions f1-2f and f2-3f.     - **Size:** Spans vertically (2 height) in a straight line.     - **Status:** Color is purple; outer edges are bold; occupied.     - **Text Identifiers:** "straight1" positioned in each sub-square.4. **straight2 (Two-square straight piece)**     - **Shape:** Straight line, composed of two connected squares.     - **Position:** Occupies positions f2-1f and f3-2f.     - **Size:** Spans vertically (2 height) in a straight line.     - **Status:** Color is green; outer edges are bold; occupied.     - **Text Identifiers:** "straight2" positioned in each sub-square.5. **square0 (One-square piece)**     - **Shape:** Single square.     - **Position:** Now occupies position f1-1f.     - **Size:** Single unit.     - **Status:** Color is red; all edges are bold; occupied.     - **Text Identifiers:** "square0" positioned slightly higher in the square.6. **square1 (One-square piece)**     - **Shape:** Single square.     - **Position:** Occupies position f3-3f.     - **Size:** Single unit.     - **Status:** Color is yellow; all edges are bold; occupied.     - **Text Identifiers:** "square1" positioned slightly higher in the square.7. **Grid Cells (Unoccupied)**     - **Shape:** Rectangular grid composed of individual squares.     - **Position:** Covers positions f5-0f to f5-3f, f4-2f to f4-3f, f2-2f, f0-0f, f0-1f, f0-2f, f1-0f, f1-3f, f0-3f.     - **Size:** Single unit for each grid cell.     - **Status:** Clear (no color).     - **Text Identifiers:** Each position marked with text (e.g., "f5-0f") located at the center of the square and labeled as "clear".