not to know

• I do not know
• you do not know
• you do not know
• he/she/it does not know
• we do not know
• they do not know

• I did not know
• you did not know
• you did not know
• he/she/it did not know
• we did not know
• they did not know

• I am not knowing
• you are not knowing
• you are not knowing
• he/she/it is not knowing
• we are not knowing
• they are not knowing

• I have not known
• you have not known
• you have not known
• he/she/it has not known
• we have not known
• they have not known

• I will not know
• you will not know
• you will not know
• he/she/it will not know
• we will not know
• they will not know

• I will not have known
• you will not have known
• you will not have known
• he/she/it will not have known
• we will not have known
• they will not have known

• I was not knowing
• you were not knowing
• you were not knowing
• he/she/it was not knowing
• we were not knowing
• they were not knowing

• I had not known
• you had not known
• you had not known
• he/she/it had not known
• we had not known
• they had not known

• I will not be knowing
• you will not be knowing
• you will not be knowing
• he/she/it will not be knowing
• we will not be knowing
• they will not be knowing

• I have not been knowing
• you have not been knowing
• you have not been knowing
• he/she/it has not been knowing
• we have not been knowing
• they have not been knowing

• I had not been knowing
• you had not been knowing
• you had not been knowing
• he/she/it had not been knowing
• we had not been knowing
• they had not been knowing

• I will not have been knowing
• you will not have been knowing
• you will not have been knowing
• he/she/it will not have been knowing
• we will not have been knowing
• they will not have been knowing

• not knowing

• not known

• not having known