Caveat is I'm a virologist, not a biochemist. But there does seem to be a relationship between an anticodon, and the amino acid that's associated. We talked about this in my biochem class in undergrad. Generally speaking, amino acids that are synthesized through the same pathway share the first base if the 3 in their respective codons. I think biochemists hypothesize that this was due to evolution of the pathways over time leading to new amino acids, so they're similar. Also, amino acids with similar chemical properties have similar codons. This is actually a hugely important phenomenon for life, because it drastically reduces the effects of point mutations. I also know that there was at least one experiment in which researchers compared binding affinities of amino acids to RNA triplets and showed that a given amino acid often has a higher affinity for the triplet of its codon versus a different one. What this all means I can't say, maybe some biochemist will chime in.