| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] have been [verb] [adv] since | 16 |
|
| 2 | [noun sg] has [been] [verb] [adv] since | 11 |
|
| 3 | [noun sg] have [been] [v-ing] [adv] since | 8 |
|
| 4 | [noun sg] have [been] [vb pp] [adv] since | 8 |
|
