Clutch and Brake pipe fittings

[Symonab]

Very quick question and one that I wished I had made a note about. I have completely stripped my Chim down for a full rebuild and I am currently rebuilding her. I have got to the stage after fitting new brake lines that I need to attache them to the M/S. However ther are 3 fittings and I cannot remember for the life of me which one does what.

Obviously there are 2 for the front and 1 for the rear but?????

Any indicators to where they go would be much appreciated.