I stiffen you stiffen she stiffens we stiffen you stiffen they stiffen
Presente continuo
I am stiffening you are stiffening she is stiffening we are stiffening you are stiffening they are stiffening
Pretérito
I stiffened you stiffened she stiffened we stiffened you stiffened they stiffened
Pretérito continuo
I was stiffening you were stiffening she was stiffening we were stiffening you were stiffening they were stiffening
Presente perfecto
I have stiffened you have stiffened she has stiffened we have stiffened you have stiffened they have stiffened
Presente perfecto continuo
I have been stiffening you have been stiffening she has been stiffening we have been stiffening you have been stiffening they have been stiffening
Pluscuamperfecto
I had stiffened you had stiffened she had stiffened we had stiffened you had stiffened they had stiffened
Pluscuamperfecto continuo
I had been stiffening you had been stiffening she had been stiffening we had been stiffening you had been stiffening they had been stiffening
Futuro simple
I will stiffen you will stiffen she will stiffen we will stiffen you will stiffen they will stiffen
Futuro continuo
I will be stiffening you will be stiffening she will be stiffening we will be stiffening you will be stiffening they will be stiffening
Futuro perfecto
I will have stiffened you will have stiffened she will have stiffened we will have stiffened you will have stiffened they will have stiffened
Futuro perfecto contínuo
I will have been stiffening you will have been stiffening she will have been stiffening we will have been stiffening you will have been stiffening they will have been stiffening
Condicional
Presente
I would stiffen you would stiffen she would stiffen we would stiffen you would stiffen they would stiffen
Presente continuo
I would be stiffening you would be stiffening she would be stiffening we would be stiffening you would be stiffening they would be stiffening
Passado
I would have stiffened you would have stiffened she would have stiffened we would have stiffened you would have stiffened they would have stiffened
Passado continuo
I would have been stiffening you would have been stiffening she would have been stiffening we would have been stiffening you would have been stiffening they would have been stiffening