0 the form of the verb that is used to show that an action will have been performed by a particular time. In English it is formed by "will have" or "shall have" and a past participle: --
1 the tense formed using "will have" or "shall have" with a past participle to show that an action will be completed by a particular time in the future: --
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 slutföra det steg för steg hur lång vägen än är och den kan inte slutföras hur kort vägen än är om du inte ens markerar ditt fotavtryck.