I trephine you trephine he trephines we trephine you trephine they trephine
Present continuous
I am trephining you are trephining he is trephining we are trephining you are trephining they are trephining
Preterite
I trephined you trephined he trephined we trephined you trephined they trephined
Preterite continuous
I was trephining you were trephining he was trephining we were trephining you were trephining they were trephining
Present perfect
I have trephined you have trephined he has trephined we have trephined you have trephined they have trephined
Present perfect continuous
I have been trephining you have been trephining he has been trephining we have been trephining you have been trephining they have been trephining
Pluperfect
I had trephined you had trephined he had trephined we had trephined you had trephined they had trephined
Pluperfect continuous
I had been trephining you had been trephining he had been trephining we had been trephining you had been trephining they had been trephining
Future
I will trephine you will trephine he will trephine we will trephine you will trephine they will trephine
Future continuous
I will be trephining you will be trephining he will be trephining we will be trephining you will be trephining they will be trephining
Future perfect
I will have trephined you will have trephined he will have trephined we will have trephined you will have trephined they will have trephined
Future perfect continuous
I will have been trephining you will have been trephining he will have been trephining we will have been trephining you will have been trephining they will have been trephining
Conditional
Present
I would trephine you would trephine he would trephine we would trephine you would trephine they would trephine
Present continuous
I would be trephining you would be trephining he would be trephining we would be trephining you would be trephining they would be trephining
Past
I would have trephined you would have trephined he would have trephined we would have trephined you would have trephined they would have trephined
Past continuous
I would have been trephining you would have been trephining he would have been trephining we would have been trephining you would have been trephining they would have been trephining