do I tighten? do you tighten? does he tighten? do we tighten? do you tighten? do they tighten?
Present continuous
am I tightening? are you tightening? is he tightening? are we tightening? are you tightening? are they tightening?
Preterite
did I tighten? did you tighten? did he tighten? did we tighten? did you tighten? did they tighten?
Preterite continuous
was I tightening? were you tightening? was he tightening? were we tightening? were you tightening? were they tightening?
Present perfect
have I tightened? have you tightened? has he tightened? have we tightened? have you tightened? have they tightened?
Present perfect continuous
have I been tightening? have you been tightening? has he been tightening? have we been tightening? have you been tightening? have they been tightening?
Pluperfect
had I tightened? had you tightened? had he tightened? had we tightened? had you tightened? had they tightened?
Pluperfect continuous
had I been tightening? had you been tightening? had he been tightening? had we been tightening? had you been tightening? had they been tightening?
Future
will I tighten? will you tighten? will he tighten? will we tighten? will you tighten? will they tighten?
Future continuous
will I be tightening? will you be tightening? will he be tightening? will we be tightening? will you be tightening? will they be tightening?
Future perfect
will I have tightened? will you have tightened? will he have tightened? will we have tightened? will you have tightened? will they have tightened?
Future perfect continuous
will I have been tightening? will you have been tightening? will he have been tightening? will we have been tightening? will you have been tightening? will they have been tightening?
Conditional
Present
would I tighten? would you tighten? would he tighten? would we tighten? would you tighten? would they tighten?
Present continuous
would I be tightening? would you be tightening? would he be tightening? would we be tightening? would you be tightening? would they be tightening?
Past
would I have tightened? would you have tightened? would he have tightened? would we have tightened? would you have tightened? would they have tightened?
Past continuous
would I have been tightening? would you have been tightening? would he have been tightening? would we have been tightening? would you have been tightening? would they have been tightening?