JKLM

JKLM is a sequence of letters that appears in various contexts, most notably as a placeholder for a specific order of elements. It is often used in computing and cryptography as a mnemonic or an example sequence. The letters J, K, L, and M are contiguous in the English alphabet. In some informal settings, JKLM is used in place of ABCD when demonstrating a pattern or sequence where the actual identity of the items is not important, but their order is. It can also be seen as a playful or ironic alternative to the more common "ABCD" placeholder. The specific origin of its widespread use is not definitively documented but is believed to have evolved organically within technical communities. While not a formal standard, its recognition is widespread enough to be understood in many technical discussions.