0 the grammatical form used for an action that had already finished when another action happened. It is made with "had" and a past participle: --
1 a tense usually formed with "had" that is used to refer to the earlier of two different times in the past: --
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
We kunnen het stap voor stap voltooien, hoe lang de weg ook is en het kan niet worden voltooid, hoe kort de weg ook is, als je niet eens je voetafdruk markeert.