| Simple | Progressive | Perfect | Progressive |
Present |
I cluster |
you cluster |
he/she/it clusters |
we cluster |
you all cluster |
they cluster |
|
I am clustering |
you are clustering |
he/she/it is clustering |
we are clustering |
you all are clustering |
they are clustering |
|
I have clustered |
you have clustered |
he/she/it has clustered |
we have clustered |
you all have clustered |
they have clustered |
|
I have been clustering |
you have been clustering |
he/she/it has been clustering |
we have been clustering |
you all have been clustering |
they have been clustering |
|
Past |
I clustered |
you clustered |
he/she/it clustered |
we clustered |
you all clustered |
they clustered |
|
I was clustering |
you were clustering |
he/she/it was clustering |
we were clustering |
you all were clustering |
they were clustering |
|
I had clustered |
you had clustered |
he/she/it had clustered |
we had clustered |
you all had clustered |
they had clustered |
|
I had been clustering |
you had been clustering |
he/she/it had been clustering |
we had been clustering |
you all had been clustering |
they had been clustering |
|
Future |
I will cluster |
you will cluster |
he/she/it will cluster |
we will cluster |
you all will cluster |
they will cluster |
|
I will be clustering |
you will be clustering |
he/she/it will be clustering |
we are clustering |
you all will be clustering |
they will be clustering |
|
I will have clustered |
you will have clustered |
he/she/it will have clustered |
we will have clustered |
you all will have clustered |
they will have clustered |
|
I will have been clustering |
you will have been clustering |
he/she/it will have been clustering |
we will have been clustering |
you all will have been clustering |
they will have been clustering |
|