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