| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is an | 15888 |
|
| 2 | was an | 10072 |
|
| 3 | be an | 5773 |
|
| 4 | 's an | 3073 |
|
| 5 | been an | 1985 |
|
| 6 | are an | 1193 |
|
| 7 | being an | 755 |
|
| 8 | were an | 623 |
|
| 9 | 'm an | 251 |
|
| 10 | 're an | 240 |
|
| 11 | am an | 122 |
|
| 12 | be an | 19 |
|
