Past action in indirect speech.
Formation:
For transitive verbs (with Akkusativ, eg. to like someone/something) and reflexive verbs(with sich, eg. sich treffen):
habe, habest, habe, haben, habet, haben + Partizip II.
For intransitive verbs:
denoting movement or change of state, and the verbs sein, werden, bleiben:
sei, seist, sei, seien, seiet, seien+ Partizip II.
For other intransitive verbs:
habe, habest, habe, haben, habet, haben + Partizip II.