0 indicates every person or thing does sth to the others -- hverandre
1 used as the object when an action takes place between two (loosely, more than two) people etc -- hverandre
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.
Vi kan fullføre den trinn for trinn, uansett hvor lang veien er, og den kan ikke fullføres uansett hvor kort veien er hvis du ikke en gang markerer fotavtrykket ditt.