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