Warning, this verb may not exist. Conjugation is given as example.
Indicative
Present
I keen keen you keen keen he keen keens we keen keen you keen keen they keen keen
Present continuous
I am keen keening you are keen keening he is keen keening we are keen keening you are keen keening they are keen keening
Preterite
I keen keened you keen keened he keen keened we keen keened you keen keened they keen keened
Preterite continuous
I was keen keening you were keen keening he was keen keening we were keen keening you were keen keening they were keen keening
Present perfect
I have keen keened you have keen keened he has keen keened we have keen keened you have keen keened they have keen keened
Present perfect continuous
I have been keen keening you have been keen keening he has been keen keening we have been keen keening you have been keen keening they have been keen keening
Pluperfect
I had keen keened you had keen keened he had keen keened we had keen keened you had keen keened they had keen keened
Pluperfect continuous
I had been keen keening you had been keen keening he had been keen keening we had been keen keening you had been keen keening they had been keen keening
Future
I will keen keen you will keen keen he will keen keen we will keen keen you will keen keen they will keen keen
Future continuous
I will be keen keening you will be keen keening he will be keen keening we will be keen keening you will be keen keening they will be keen keening
Future perfect
I will have keen keened you will have keen keened he will have keen keened we will have keen keened you will have keen keened they will have keen keened
Future perfect continuous
I will have been keen keening you will have been keen keening he will have been keen keening we will have been keen keening you will have been keen keening they will have been keen keening
Conditional
Present
I would keen keen you would keen keen he would keen keen we would keen keen you would keen keen they would keen keen
Present continuous
I would be keen keening you would be keen keening he would be keen keening we would be keen keening you would be keen keening they would be keen keening
Past
I would have keen keened you would have keen keened he would have keen keened we would have keen keened you would have keen keened they would have keen keened
Past continuous
I would have been keen keening you would have been keen keening he would have been keen keening we would have been keen keening you would have been keen keening they would have been keen keening