| Value | Category | Cases | |
|---|---|---|---|
| 1 | Mud | 68016 |
53.1%
|
| 2 | Wood, bamboo, reed | 10990 |
8.6%
|
| 3 | Brick, cement, stone | 47325 |
37%
|
| 9 | Others | 1688 |
1.3%
|