ajateltavan
Ajateltavan is the genitive singular form of the Finnish adjective-participle ajateltava, which comes from the verb ajatella, meaning “to think” or “to consider.” The participle verkk is used as an adjective meaning “to be thought about” or “to be considered.” When ajateltava modifies a following noun that is in the genitive, the form changes to ajateltavan, yielding phrases that express “the X to be considered.”
In practice, ajateltavan appears in noun phrases where the head noun is in genitive, for example: ajateltavan
Ajateltavan should be distinguished from the plain adjective muodossa ajateltava, which is used directly before a