I don't undergo you don't undergo he doesn't undergo we don't undergo you don't undergo they don't undergo
Present continuous
I'm not undergoing you aren't undergoing he isn't undergoing we aren't undergoing you aren't undergoing they aren't undergoing
Preterite
I didn't undergo you didn't undergo he didn't undergo we didn't undergo you didn't undergo they didn't undergo
Preterite continuous
I wasn't undergoing you weren't undergoing he wasn't undergoing we weren't undergoing you weren't undergoing they weren't undergoing
Present perfect
I haven't undergone you haven't undergone he hasn't undergone we haven't undergone you haven't undergone they haven't undergone
Present perfect continuous
I haven't been undergoing you haven't been undergoing he hasn't been undergoing we haven't been undergoing you haven't been undergoing they haven't been undergoing
Pluperfect
I hadn't undergone you hadn't undergone he hadn't undergone we hadn't undergone you hadn't undergone they hadn't undergone
Pluperfect continuous
I hadn't been undergoing you hadn't been undergoing he hadn't been undergoing we hadn't been undergoing you hadn't been undergoing they hadn't been undergoing
Future
I won't undergo you won't undergo he won't undergo we won't undergo you won't undergo they won't undergo
Future continuous
I won't be undergoing you won't be undergoing he won't be undergoing we won't be undergoing you won't be undergoing they won't be undergoing
Future perfect
I won't have undergone you won't have undergone he won't have undergone we won't have undergone you won't have undergone they won't have undergone
Future perfect continuous
I won't have been undergoing you won't have been undergoing he won't have been undergoing we won't have been undergoing you won't have been undergoing they won't have been undergoing
Conditional
Present
I wouldn't undergo you wouldn't undergo he wouldn't undergo we wouldn't undergo you wouldn't undergo they wouldn't undergo
Present continuous
I wouldn't be undergoing you wouldn't be undergoing he wouldn't be undergoing we wouldn't be undergoing you wouldn't be undergoing they wouldn't be undergoing
Past
I wouldn't have undergone you wouldn't have undergone he wouldn't have undergone we wouldn't have undergone you wouldn't have undergone they wouldn't have undergone
Past continuous
I wouldn't have been undergoing you wouldn't have been undergoing he wouldn't have been undergoing we wouldn't have been undergoing you wouldn't have been undergoing they wouldn't have been undergoing