I decrease you decrease he decreases we decrease you decrease they decrease
Present continuous
I am decreasing you are decreasing he is decreasing we are decreasing you are decreasing they are decreasing
Preterite
I decreased you decreased he decreased we decreased you decreased they decreased
Preterite continuous
I was decreasing you were decreasing he was decreasing we were decreasing you were decreasing they were decreasing
Present perfect
I have decreased you have decreased he has decreased we have decreased you have decreased they have decreased
Present perfect continuous
I have been decreasing you have been decreasing he has been decreasing we have been decreasing you have been decreasing they have been decreasing
Pluperfect
I had decreased you had decreased he had decreased we had decreased you had decreased they had decreased
Pluperfect continuous
I had been decreasing you had been decreasing he had been decreasing we had been decreasing you had been decreasing they had been decreasing
Future
I will decrease you will decrease he will decrease we will decrease you will decrease they will decrease
Future continuous
I will be decreasing you will be decreasing he will be decreasing we will be decreasing you will be decreasing they will be decreasing
Future perfect
I will have decreased you will have decreased he will have decreased we will have decreased you will have decreased they will have decreased
Future perfect continuous
I will have been decreasing you will have been decreasing he will have been decreasing we will have been decreasing you will have been decreasing they will have been decreasing
Conditional
Present
I would decrease you would decrease he would decrease we would decrease you would decrease they would decrease
Present continuous
I would be decreasing you would be decreasing he would be decreasing we would be decreasing you would be decreasing they would be decreasing
Past
I would have decreased you would have decreased he would have decreased we would have decreased you would have decreased they would have decreased
Past continuous
I would have been decreasing you would have been decreasing he would have been decreasing we would have been decreasing you would have been decreasing they would have been decreasing