| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [adv] a year | 51 |
|
| 2 | [vb past] [adv prt] a year | 13 |
|
| 3 | [vb past] over a year | 11 |
|
| 4 | took [adv] a year | 9 |
|
| 5 | [vb past] over a year | 7 |
|
| 6 | [vb past] only a year | 7 |
|
| 7 | [vb past] twice a year | 7 |
|
| 8 | [vb past] about a year | 7 |
|
| 9 | [vb past] twice a year | 7 |
|
| 10 | [vb past] about a year | 7 |
|
| 11 | [vb past] only a year | 7 |
|
| 12 | lasted [adv] a year | 5 |
|
| 13 | died [adv] a year | 5 |
|
