He, Li, Be, B, C, N, O, F,
Ne, Na, Mg, Al, Si, P, S, Cl,
Ar, K, Ca, Sc, Ti, V, Cr, Mn,
Fe, Co, Ni, Cu, Zn, Ga, Ge,
As, Se, Br, Kr, Rb, Sr, Y, Zr,
Nb, Mo, Tc, Ru, Rh, Pd, Ag,
Cd, In, Sn, Sb, Te, I, Xe,
Cs, Ba, La, Ce, Pr, Nd, Pm,
Sm, Eu, Gd, Tb, Dy
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