stack up against

• I stack
• you stack
• you stack
• he/she/it stacks
• we stack
• they stack

• I stacked
• you stacked
• you stacked
• he/she/it stacked
• we stacked
• they stacked

• I am stacking
• you are stacking
• you are stacking
• he/she/it is stacking
• we are stacking
• they are stacking

• I have stacked
• you have stacked
• you have stacked
• he/she/it has stacked
• we have stacked
• they have stacked

• I will stack
• you will stack
• you will stack
• he/she/it will stack
• we will stack
• they will stack

• I will have stacked
• you will have stacked
• you will have stacked
• he/she/it will have stacked
• we will have stacked
• they will have stacked

• I was stacking
• you were stacking
• you were stacking
• he/she/it was stacking
• we were stacking
• they were stacking

• I had stacked
• you had stacked
• you had stacked
• he/she/it had stacked
• we had stacked
• they had stacked

• I will be stacking
• you will be stacking
• you will be stacking
• he/she/it will be stacking
• we will be stacking
• they will be stacking

• I have been stacking
• you have been stacking
• you have been stacking
• he/she/it has been stacking
• we have been stacking
• they have been stacking

• I had been stacking
• you had been stacking
• you had been stacking
• he/she/it had been stacking
• we had been stacking
• they had been stacking

• I will have been stacking
• you will have been stacking
• you will have been stacking
• he/she/it will have been stacking
• we will have been stacking
• they will have been stacking

• stacking

• stacked

• having stacked