You've sort of answered your own question. None of those three would obviously mean the same thing to me. And that's just one possible combination. If you consi

You've sort of answered your own question. None of those three would obviously mean the same thing to me. And that's just one possible combination. If you consider all possible combinations of 4 symbols in K, most of them will have a distinct but obvious (and useful) meaning that is extremely hard to summarise in a single word.