| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] have been [verb] since [adj] | 43 |
|
| 2 | [noun] have [been] [vb pp] since [adj] | 37 |
|
| 3 | [noun pl] have [been] [verb] since [adj] | 36 |
|
| 4 | [noun] have [been] [verb] since [num] | 35 |
|
| 5 | [noun sg] have [been] [verb] since [adj] | 6 |
|
| 6 | [noun] have [been] [v-ing] since [adj] | 6 |
|
| 7 | [noun] have [been] [verb] since 1979 | 5 |
|
| 8 | [noun] have [been] [verb] since 1979 | 5 |
|
