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