石

0 the radical itself

石

3 3 strokes after the radical

矿 码

4 4 strokes after the radical

砂 砌 砍 研 砖

5 5 strokes after the radical

砰 砲 破 砸 础

6 6 strokes after the radical

硃 硅 硕

7 7 strokes after the radical

硫 硬 确

8 8 strokes after the radical

碌 碍 碎 碑 碗 碘 碰

9 9 strokes after the radical

碟 碧 碩 碱 碳 磁

10 10 strokes after the radical

確 碼 磅 磊 磋 磕

11 11 strokes after the radical

磚 磨

12 12 strokes after the radical

磷 礁

13 13 strokes after the radical

礎

14 14 strokes after the radical

礙

15 15 strokes after the radical

礦