| Simple | Progressive | Perfect | Progressive |
| Present |
| I curdle |
| you curdle |
| he/she/it curdles |
| we curdle |
| you all curdle |
| they curdle |
|
| I am curdling |
| you are curdling |
| he/she/it is curdling |
| we are curdling |
| you all are curdling |
| they are curdling |
|
| I have curdled |
| you have curdled |
| he/she/it has curdled |
| we have curdled |
| you all have curdled |
| they have curdled |
|
| I have been curdling |
| you have been curdling |
| he/she/it has been curdling |
| we have been curdling |
| you all have been curdling |
| they have been curdling |
|
| Past |
| I curdled |
| you curdled |
| he/she/it curdled |
| we curdled |
| you all curdled |
| they curdled |
|
| I was curdling |
| you were curdling |
| he/she/it was curdling |
| we were curdling |
| you all were curdling |
| they were curdling |
|
| I had curdled |
| you had curdled |
| he/she/it had curdled |
| we had curdled |
| you all had curdled |
| they had curdled |
|
| I had been curdling |
| you had been curdling |
| he/she/it had been curdling |
| we had been curdling |
| you all had been curdling |
| they had been curdling |
|
| Future |
| I will curdle |
| you will curdle |
| he/she/it will curdle |
| we will curdle |
| you all will curdle |
| they will curdle |
|
| I will be curdling |
| you will be curdling |
| he/she/it will be curdling |
| we are curdling |
| you all will be curdling |
| they will be curdling |
|
| I will have curdled |
| you will have curdled |
| he/she/it will have curdled |
| we will have curdled |
| you all will have curdled |
| they will have curdled |
|
| I will have been curdling |
| you will have been curdling |
| he/she/it will have been curdling |
| we will have been curdling |
| you all will have been curdling |
| they will have been curdling |
|
