| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at the [noun] | 113139 |
|
| 2 | at the [noun sg] | 95376 |
|
| 3 | [prep] the base | 1409 |
|
| 4 | [prep] the base | 1409 |
|
| 5 | at [art] base | 459 |
|
| 6 | at the base | 456 |
|
| 7 | at the base | 456 |
|
