| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be at the back | 97 |
|
| 2 | [was/were] at the back | 44 |
|
| 3 | [is] at the back | 33 |
|
| 4 | was at the back | 32 |
|
| 5 | is at the back | 18 |
|
| 6 | 's at the back | 15 |
|
| 7 | were at the back | 12 |
|
| 8 | [am/are] at the back | 9 |
|
| 9 | are at the back | 8 |
|
| 10 | be at the back | 7 |
|
| 11 | [be] at the back | 7 |
|
