vacuum hoses - help

[monda2]

Hi all, require some help regarding the vacuum hoses pictured on my B16A, where do they connect to and do I need them connected,

number 1 - where does this go? does it need to be connected?
number 2 - where does this go? does it need to be connected?
number 3 - correct?
number 4 - where does this go? does it need to be connected?
number 5 - where does this go? does it need to be connected?
number 6 - where does this go? - inlet pipe? does it need to be connected?

http://i51.photobucket.com/albums/f386/benmin/inletmaninumbers.jpg

Cheers