| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [been] [vb pp] [prep] recent year | 80 |
|
| 2 | have [been] [vb pp] [prep] recent year | 80 |
|
| 3 | [vb -s] [been] [vb pp] [prep] recent year | 45 |
|
| 4 | has [been] [vb pp] [prep] recent year | 45 |
|
| 5 | have [been] [vb pp] [prep] recent year | 32 |
|
| 6 | [vb base] [been] [vb pp] [prep] recent year | 32 |
|
| 7 | [adv] [been] [vb pp] [prep] recent year | 6 |
|
| 8 | [been] [adv] [vb pp] [prep] recent year | 19 |
|
| 9 | [been] [adv] [vb pp] [prep] recent year | 19 |
|
| 10 | [been] extensively [vb pp] [prep] recent year | 6 |
|
| 11 | [been] extensively [vb pp] [prep] recent year | 6 |
|
| 12 | [been] [vb pp] [adv] [prep] recent year | 15 |
|
| 13 | [been] [vb pp] [adv] [prep] recent year | 11 |
|
| 14 | [been] [vb pp] [prep] recent year [prep] | 35 |
|
| 15 | [been] [vb pp] [prep] recent year [prep] | 35 |
|
| 16 | [been] [vb pp] [prep] recent year by | 14 |
|
| 17 | [been] [vb pp] [prep] recent year by | 14 |
|
| 18 | [been] [vb pp] [prep] recent year [conj] | 8 |
|
| 19 | [been] [vb pp] [prep] recent year in | 7 |
|
| 20 | [been] [vb pp] [prep] recent year and | 7 |
|
| 21 | [been] [vb pp] [prep] recent year [coord] | 7 |
|
| 22 | [been] [vb pp] [prep] recent year and | 7 |
|
| 23 | [been] [vb pp] [prep] recent year in | 7 |
|
