| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] back [prep] [art] last | 38 |
|
| 2 | [v-ing] back [prep] [art] last | 13 |
|
| 3 | [vb past] back [prep] [art] last | 12 |
|
| 4 | look back [prep] [art] last | 10 |
|
| 5 | date back [prep] [art] last | 6 |
|
| 6 | [vb base] back [prep] [art] last | 5 |
|
| 7 | back [prep] [art] [noun sg] last | 5 |
|
| 8 | back [prep] [art] [noun] last | 5 |
|
| 9 | back [prep] [art] last [noun] | 31 |
|
| 10 | back [prep] [art] last [noun sg] | 29 |
|
| 11 | back [prep] [art] last [adj] | 17 |
|
| 12 | back [prep] [art] last [num] | 11 |
|
| 13 | back [prep] [art] last century | 6 |
|
| 14 | back [prep] [art] last century | 6 |
|
