如何繪製附圖的三視圖---**Chart/Diagram Description:** * **Type:** Isometric projection of a 3D structure built from multiple unit cubes. * **Main Elements:** * The structure is composed of individual cubes. * The visible faces of the cubes are colored red, yellow, and blue. * The structure has a base layer with a U-shape indentation at the front. There are blocks stacked on this base. * **Labels:** * "上方" (Above) is placed near the top of the structure. * "前方" (Front) is placed near the front direction of the structure. * "右方" (Right) is placed near the right direction of the structure. * There is a dashed line and a grey circle-like shape on the ground plane, potentially indicating a position or origin, but it's not clearly labeled. * **Shape:** The structure appears to be built on a 3x3 grid on the base, with some positions empty. The total number of cubes appears to be 1 (back left) + 2 (middle back) + 3 (right back) + 2 (right middle) + 1 (right front) + 1 (left front) + 1 (left middle) + 2 (stacked on middle back) + 1 (stacked on right middle) + 1 (stacked on right back, right column). Counting is difficult and not explicitly requested unless needed for a problem. The structure has a stepped appearance on the right side and a raised section in the back. * **Relative Position and Direction:** The labels indicate the viewing orientation. **Textual Information:** * Labels: 上方 (Above), 前方 (Front), 右方 (Right)