SIMPLE PRESENT
Affirmative
- I cluster
- you cluster
- she/he/it clusters
- we cluster
- you cluster
- they cluster
Negative
- I do not cluster
- you do not cluster
- she/he/it does not cluster
- we do not cluster
- you do not cluster
- they do not cluster
Interrogative
- do I cluster ?
- do you cluster ?
- does she/he/it cluster ?
- do we cluster ?
- do you cluster ?
- do they cluster ?
Negative - Interrogative
- do I not cluster ?
- do you not cluster ?
- does she/he/it not cluster ?
- do we not cluster ?
- do you not cluster ?
- do they not cluster ?
PRESENT CONTINUOUS
Affirmative
- I am clustering
- you are clustering
- she/he/it is clustering
- we are clustering
- you are clustering
- they are clustering
Negative
- I am not clustering
- you are not clustering
- she/he/it is not clustering
- we are not clustering
- you are not clustering
- they are not clustering
Interrogative
- am I clustering ?
- are you clustering ?
- is she/he/it clustering ?
- are we clustering ?
- are you clustering ?
- are they clustering ?
Negative - Interrogative
- am I not clustering ?
- are you not clustering ?
- is she/he/it not clustering ?
- are we not clustering ?
- are you not clustering ?
- are they not clustering ?
SIMPLE PAST
Affirmative
- I clustered
- you clustered
- she/he/it clustered
- we clustered
- you clustered
- they clustered
Negative
- I did not cluster
- you did not cluster
- she/he/it did not cluster
- we did not cluster
- you did not cluster
- they did not cluster
Interrogative
- did I cluster ?
- did you cluster ?
- did she/he/it cluster ?
- did we cluster ?
- did you cluster ?
- did they cluster ?
Negative - Interrogative
- did I not cluster ?
- did you not cluster ?
- did she/he/it not cluster ?
- did we not cluster ?
- did you not cluster ?
- did they not cluster ?
PRESENT PERFECT
Affirmative
- I have clustered
- you have clustered
- she/he/it has clustered
- we have clustered
- you have clustered
- they have clustered
Negative
- I have not clustered
- you have not clustered
- she/he/it has not clustered
- we have not clustered
- you have not clustered
- they have not clustered
Interrogative
- have I clustered ?
- have you clustered ?
- has she/he/it clustered ?
- have we clustered ?
- have you clustered ?
- have they clustered ?
Negative - Interrogative
- have I not clustered ?
- have you not clustered ?
- has she/he/it not clustered ?
- have we not clustered ?
- have you not clustered ?
- have they not clustered ?
PAST CONTINUOUS
Affirmative
- I was clustering
- you were clustering
- she/he/it was clustering
- we were clustering
- you were clustering
- they were clustering
Negative
- I was not clustering
- you were not clustering
- she/he/it was not clustering
- you were not clustering
- you were not clustering
- they were not clustering
Interrogative
- was I clustering ?
- were you clustering ?
- was she/he/it clustering ?
- were we clustering ?
- were you clustering ?
- were they clustering ?
Negative - Interrogative
- was I not clustering ?
- were you not clustering ?
- was she/he/it not clustering ?
- were we not clustering ?
- were you not clustering ?
- were they not clustering ?
PRESENT PERFECT CONTINUOUS
Affirmative
- I have been clustering
- you have been clustering
- she/he/it has been clustering
- we have been clustering
- you have been clustering
- they have been clustering
Negative
- I have not been clustering
- you have not been clustering
- she/he/it has not been clustering
- we have not been clustering
- you have not been clustering
- they have not been clustering
Interrogative
- have I been clustering ?
- have you been clustering ?
- has she/he/it been clustering ?
- have we been clustering ?
- have you been clustering ?
- have they been clustering ?
Negative - Interrogative
- have I not been clustering ?
- have you not been clustering ?
- has she/he/it not been clustering ?
- have we not been clustering ?
- have you not been clustering ?
- have they not been clustering ?
PAST PERFECT
Affirmative
- I had clustered
- you had clustered
- she/he/it had clustered
- we had clustered
- you had clustered
- they had clustered
Negative
- I had not clustered
- you had not clustered
- she/he/it had not clustered
- we had not clustered
- you had not clustered
- they had not clustered
Interrogative
- had I clustered ?
- had you clustered ?
- had she/he/it clustered ?
- had we clustered ?
- had you clustered ?
- had they clustered ?
Negative - Interrogative
- had I not clustered ?
- had you not clustered ?
- had she/he/it not clustered ?
- had we not clustered ?
- had you not clustered ?
- had they not clustered ?
PAST PERFECT CONTINUOUS
Affirmative
- I had been clustering
- you had been clustering
- she/he/it had been clustering
- we had been clustering
- you had been clustering
- they had been clustering
Negative
- I had not been clustering
- you had not been clustering
- she/he/it had not been clustering
- we had not been clustering
- you had not been clustering
- they had not been clustering
Interrogative
- had I been clustering ?
- had you been clustering ?
- had she/he/it been clustering ?
- had we been clustering ?
- had you been clustering ?
- had they been clustering ?
Negative - Interrogative
- had I not been clustering ?
- had you not been clustering ?
- had she/he/it not been clustering ?
- had we not been clustering ?
- had you not been clustering ?
- had they not been clustering ?