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seri 2 b trc d 4 seri-2-b-trc-d-4 seri.2.b.trc.d.4 seri/2/b/trc/d/4 seri_2_b_trc_d_4 seri+2+b+trc+d+4 seri*2*b*trc*d*4 seri2btrcd4 Seri2 Seri2B Seri2BTrc Seri2BTrcD 2B 2BTrc 2BTrcD 2BTrcD4 BTrc BTrcD BTrcD4 TrcD TrcD4 D4