do I use? do you use? does she use? do we use? do you use? do they use?
Present continuous
am I using? are you using? is she using? are we using? are you using? are they using?
Preterite
did I use? did you use? did she use? did we use? did you use? did they use?
Preterite continuous
was I using? were you using? was she using? were we using? were you using? were they using?
Present perfect
have I used? have you used? has she used? have we used? have you used? have they used?
Present perfect continuous
have I been using? have you been using? has she been using? have we been using? have you been using? have they been using?
Pluperfect
had I used? had you used? had she used? had we used? had you used? had they used?
Pluperfect continuous
had I been using? had you been using? had she been using? had we been using? had you been using? had they been using?
Future
will I use? will you use? will she use? will we use? will you use? will they use?
Future continuous
will I be using? will you be using? will she be using? will we be using? will you be using? will they be using?
Future perfect
will I have used? will you have used? will she have used? will we have used? will you have used? will they have used?
Future perfect continuous
will I have been using? will you have been using? will she have been using? will we have been using? will you have been using? will they have been using?
Conditional
Present
would I use? would you use? would she use? would we use? would you use? would they use?
Present continuous
would I be using? would you be using? would she be using? would we be using? would you be using? would they be using?
Past
would I have used? would you have used? would she have used? would we have used? would you have used? would they have used?
Past continuous
would I have been using? would you have been using? would she have been using? would we have been using? would you have been using? would they have been using?