I lack you lack she lacks we lack you lack they lack
Present continuous
I am lacking you are lacking she is lacking we are lacking you are lacking they are lacking
Preterite
I lacked you lacked she lacked we lacked you lacked they lacked
Preterite continuous
I was lacking you were lacking she was lacking we were lacking you were lacking they were lacking
Present perfect
I have lacked you have lacked she has lacked we have lacked you have lacked they have lacked
Present perfect continuous
I have been lacking you have been lacking she has been lacking we have been lacking you have been lacking they have been lacking
Pluperfect
I had lacked you had lacked she had lacked we had lacked you had lacked they had lacked
Pluperfect continuous
I had been lacking you had been lacking she had been lacking we had been lacking you had been lacking they had been lacking
Future
I will lack you will lack she will lack we will lack you will lack they will lack
Future continuous
I will be lacking you will be lacking she will be lacking we will be lacking you will be lacking they will be lacking
Future perfect
I will have lacked you will have lacked she will have lacked we will have lacked you will have lacked they will have lacked
Future perfect continuous
I will have been lacking you will have been lacking she will have been lacking we will have been lacking you will have been lacking they will have been lacking
Conditional
Present
I would lack you would lack she would lack we would lack you would lack they would lack
Present continuous
I would be lacking you would be lacking she would be lacking we would be lacking you would be lacking they would be lacking
Past
I would have lacked you would have lacked she would have lacked we would have lacked you would have lacked they would have lacked
Past continuous
I would have been lacking you would have been lacking she would have been lacking we would have been lacking you would have been lacking they would have been lacking