I understand you understand she understands we understand you understand they understand
Present continuous
I am understanding you are understanding she is understanding we are understanding you are understanding they are understanding
Preterite
I understood you understood she understood we understood you understood they understood
Preterite continuous
I was understanding you were understanding she was understanding we were understanding you were understanding they were understanding
Present perfect
I haveunderstood you haveunderstood she hasunderstood we haveunderstood you haveunderstood they haveunderstood
Present perfect continuous
I have been understanding you have been understanding she has been understanding we have been understanding you have been understanding they have been understanding
Pluperfect
I had understood you had understood she had understood we had understood you had understood they had understood
Pluperfect continuous
I had been understanding you had been understanding she had been understanding we had been understanding you had been understanding they had been understanding
Future
I will understand you will understand she will understand we will understand you will understand they will understand
Future continuous
I will be understanding you will be understanding she will be understanding we will be understanding you will be understanding they will be understanding
Future perfect
I will have understood you will have understood she will have understood we will have understood you will have understood they will have understood
Future perfect continuous
I will have been understanding you will have been understanding she will have been understanding we will have been understanding you will have been understanding they will have been understanding
Conditional
Present
I would understand you would understand she would understand we would understand you would understand they would understand
Present continuous
I would be understanding you would be understanding she would be understanding we would be understanding you would be understanding they would be understanding
Past
I would have understood you would have understood she would have understood we would have understood you would have understood they would have understood
Past continuous
I would have been understanding you would have been understanding she would have been understanding we would have been understanding you would have been understanding they would have been understanding