I don't strengthen you don't strengthen he doesn't strengthen we don't strengthen you don't strengthen they don't strengthen
Present continuous
I'm not strengthening you aren't strengthening he isn't strengthening we aren't strengthening you aren't strengthening they aren't strengthening
Preterite
I didn't strengthen you didn't strengthen he didn't strengthen we didn't strengthen you didn't strengthen they didn't strengthen
Preterite continuous
I wasn't strengthening you weren't strengthening he wasn't strengthening we weren't strengthening you weren't strengthening they weren't strengthening
Present perfect
I haven't strengthened you haven't strengthened he hasn't strengthened we haven't strengthened you haven't strengthened they haven't strengthened
Present perfect continuous
I haven't been strengthening you haven't been strengthening he hasn't been strengthening we haven't been strengthening you haven't been strengthening they haven't been strengthening
Pluperfect
I hadn't strengthened you hadn't strengthened he hadn't strengthened we hadn't strengthened you hadn't strengthened they hadn't strengthened
Pluperfect continuous
I hadn't been strengthening you hadn't been strengthening he hadn't been strengthening we hadn't been strengthening you hadn't been strengthening they hadn't been strengthening
Future
I won't strengthen you won't strengthen he won't strengthen we won't strengthen you won't strengthen they won't strengthen
Future continuous
I won't be strengthening you won't be strengthening he won't be strengthening we won't be strengthening you won't be strengthening they won't be strengthening
Future perfect
I won't have strengthened you won't have strengthened he won't have strengthened we won't have strengthened you won't have strengthened they won't have strengthened
Future perfect continuous
I won't have been strengthening you won't have been strengthening he won't have been strengthening we won't have been strengthening you won't have been strengthening they won't have been strengthening
Conditional
Present
I wouldn't strengthen you wouldn't strengthen he wouldn't strengthen we wouldn't strengthen you wouldn't strengthen they wouldn't strengthen
Present continuous
I wouldn't be strengthening you wouldn't be strengthening he wouldn't be strengthening we wouldn't be strengthening you wouldn't be strengthening they wouldn't be strengthening
Past
I wouldn't have strengthened you wouldn't have strengthened he wouldn't have strengthened we wouldn't have strengthened you wouldn't have strengthened they wouldn't have strengthened
Past continuous
I wouldn't have been strengthening you wouldn't have been strengthening he wouldn't have been strengthening we wouldn't have been strengthening you wouldn't have been strengthening they wouldn't have been strengthening
Imperative
Imperative
do not strengthen Let's not strengthen do not strengthen