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