Higher numbers of quarks can get bound up together but aren't stable. https://en.wikipedia.org/wiki/Tetraquark https://en.wikipedia.org/wiki/Tetraquark https:

Higher numbers of quarks can get bound up together but aren't stable. https://en.wikipedia.org/wiki/Tetraquark https://en.wikipedia.org/wiki/Tetraquark https://en.wikipedia.org/wiki/Pentaquark https://en.wikipedia.org/wiki/Pentaquark