In domestic pigs, two of the main loci influencing coat color are the Extension (E) and the Belted (B) loci. Two alleles at the E locus determine black vs. red hair color, and two alleles at the B locus determine the presence or absence of a white belt.
It is possible to find true-breeding lines of pigs that are black, black-belted, red, and red-belted. However, when true-breeding black-belted lines are crossed with true-breeding red lines, the F1 animals are always black-belted.
Based on the available information, what proportions of these four color patterns (black-belted, black, red-belted, and red, in that respective order) should be observed among F2 pigs when the F1 animals described above are interbred?