Alternatively, maybe it's a misspelling of "quartet" (four people or things), but the user added "ad" to the end. Or perhaps "qartulad" is a phonetic spelling of another word in a different language. Let me think about other languages. In Greek, "tetrades" are quartets. In Latin, "quartus" means fourth. But the "q" is still confusing. Maybe it's a mix-up of "quartet" and another word.
Alternatively, maybe it's a combination of "quarter" and "ulated," but that doesn't make sense. Wait, "qartulad" could be "quartile-ulated"? No. Alternatively, maybe it's "quantized" or something else. Hmm. sugar and spice qartulad
"Qartulad" could be a misspelling of "quartet," "quatrain," "quartile," or maybe "quadral." Alternatively, it might be a blend of words. Since the user might be non-native, let's consider other possibilities. Another angle: "qartulad" sounds like "quartile" with a "d" instead of an "l," or maybe "quartal" (a musical term) but with a "d." Alternatively, maybe it's a misspelling of "quartet" (four