I witness you witness she witnesses we witness you witness they witness
Present continuous
I am witnessing you are witnessing she is witnessing we are witnessing you are witnessing they are witnessing
Preterite
I witnessed you witnessed she witnessed we witnessed you witnessed they witnessed
Preterite continuous
I was witnessing you were witnessing she was witnessing we were witnessing you were witnessing they were witnessing
Present perfect
I have witnessed you have witnessed she has witnessed we have witnessed you have witnessed they have witnessed
Present perfect continuous
I have been witnessing you have been witnessing she has been witnessing we have been witnessing you have been witnessing they have been witnessing
Pluperfect
I had witnessed you had witnessed she had witnessed we had witnessed you had witnessed they had witnessed
Pluperfect continuous
I had been witnessing you had been witnessing she had been witnessing we had been witnessing you had been witnessing they had been witnessing
Future
I will witness you will witness she will witness we will witness you will witness they will witness
Future continuous
I will be witnessing you will be witnessing she will be witnessing we will be witnessing you will be witnessing they will be witnessing
Future perfect
I will have witnessed you will have witnessed she will have witnessed we will have witnessed you will have witnessed they will have witnessed
Future perfect continuous
I will have been witnessing you will have been witnessing she will have been witnessing we will have been witnessing you will have been witnessing they will have been witnessing
Conditional
Present
I would witness you would witness she would witness we would witness you would witness they would witness
Present continuous
I would be witnessing you would be witnessing she would be witnessing we would be witnessing you would be witnessing they would be witnessing
Past
I would have witnessed you would have witnessed she would have witnessed we would have witnessed you would have witnessed they would have witnessed
Past continuous
I would have been witnessing you would have been witnessing she would have been witnessing we would have been witnessing you would have been witnessing they would have been witnessing