I sharpen you sharpen he sharpens we sharpen you sharpen they sharpen
Present continuous
I am sharpening you are sharpening he is sharpening we are sharpening you are sharpening they are sharpening
Preterite
I sharpened you sharpened he sharpened we sharpened you sharpened they sharpened
Preterite continuous
I was sharpening you were sharpening he was sharpening we were sharpening you were sharpening they were sharpening
Present perfect
I have sharpened you have sharpened he has sharpened we have sharpened you have sharpened they have sharpened
Present perfect continuous
I have been sharpening you have been sharpening he has been sharpening we have been sharpening you have been sharpening they have been sharpening
Pluperfect
I had sharpened you had sharpened he had sharpened we had sharpened you had sharpened they had sharpened
Pluperfect continuous
I had been sharpening you had been sharpening he had been sharpening we had been sharpening you had been sharpening they had been sharpening
Future
I will sharpen you will sharpen he will sharpen we will sharpen you will sharpen they will sharpen
Future continuous
I will be sharpening you will be sharpening he will be sharpening we will be sharpening you will be sharpening they will be sharpening
Future perfect
I will have sharpened you will have sharpened he will have sharpened we will have sharpened you will have sharpened they will have sharpened
Future perfect continuous
I will have been sharpening you will have been sharpening he will have been sharpening we will have been sharpening you will have been sharpening they will have been sharpening
Conditional
Present
I would sharpen you would sharpen he would sharpen we would sharpen you would sharpen they would sharpen
Present continuous
I would be sharpening you would be sharpening he would be sharpening we would be sharpening you would be sharpening they would be sharpening
Past
I would have sharpened you would have sharpened he would have sharpened we would have sharpened you would have sharpened they would have sharpened
Past continuous
I would have been sharpening you would have been sharpening he would have been sharpening we would have been sharpening you would have been sharpening they would have been sharpening