| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [verb] back to [adj] | 12 |
|
| 2 | is [v-ing] back [prep] [adj] | 8 |
|
| 3 | is get back [prep] [adj] | 5 |
|
| 4 | is [vb pp] back [prep] [adj] | 5 |
|
| 5 | is [verb] back [prep] normal | 5 |
|
