English: Pictorial description of quark weak interactions. The color of the lines between the quarks (u, c, t, d, s, b) indicates the strength of the weak coupling between these flavors. I.e. they represent the magnitudes of the components of the CKM matrix. The CKM matrix values were obtained from "C. Amsler et al. (2008). "Review of Particles Physics: The CKM Quark-Mixing Matrix". Physics Letters B667 (1): 1–1340.".