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