1) The patient is examined regularly.
2) The patient was examined regularly.
3) The patient is being examined now.
4) Тhe patient was examined yesterday at 2 o'clock.
5) When we arrived, he was examining the patient.
6) He regularly examines the patient.
7) He regularly examined the patient.
8) He is examining the patient now.
9) Тhey were discussing the plan at that time.
10) The plan was being discussed at thаt time.
11) The plan is discussing now.
12) They are discussing the plan now.
извиняюсь если где-то сделала ошибку