| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [am/are] [v-ing] a tough time [v-ing] | 5 |
|
| 2 | [be] [v-ing] a tough time [v-ing] | 5 |
|
| 3 | are [v-ing] a tough time [v-ing] | 5 |
|
| 4 | be [v-ing] a tough time [v-ing] | 5 |
|
