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Actually it is easy to understand. The first line consist of gauge boson propagation and self-interactions. The second line consist of the fermions (the 12 particles/antiparticles introduced in the first course) interactions and propagation terms. The next term consists of the Higgs interactions with matter, and the last one of all other Higgs interactions. Now you know :D

Well, this explanation just made it a lot easier. It is good to know things :)

Glad you liked it ^^

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