to be - sein
is/are- was/were - been
to have - haben
have/has - had - had
can - können
can - could
to have to - müssen
has/have to - had to - had to
to say - sagen
say/says - said - said
to do - machen
do/does - did - done
to give - geben
give/gives - gave - given
to come - kommen
come/comes - came - come
to write - schreiben
write/writes - wrote - written
to study - studieren, lernen
study/studies - studied - studied
to make - machen
make/makes - made - made
should - sollen
should - should
to want - wollen
want/wants - wanted - wanted
to go - gehen
go/goes - went - gone
to eat - essen
eat/eats - ate - eaten
to live - leben, wohnen
live/lives - lived - lived
to know - wissen
know/knows - knew - known
to see - sehen
see/sees - saw - seen
to play - spielen
play/plays - played - played
to work - arbeiten
work/works - worked - worked
must - müssen
must
to find - finden
find/finds - found - found
to stay - bleiben
stay/stays - stayed - stayed
to lie - liegen
lie/lies - lay - lain
to understand - verstehen
understand/understands - understood - understood
to think - denken
think/thinks - thought - thought
to speak - sprechen
speak/speaks - spoke - spoken
to make - machen
make/makes - made - made
to become - werden
become/becomes - became - become
to believe - glauben
believe/believes - believed - believed