Primordial quantum chromodynamics: QCD of a Fermi-Bose couple of coloured preons

We consider QCD of a massive Fermi-Bose couple of two colour triplets δ and χ of spin 1/2 and 0, respectively, and of equal charge ? 1/3, interacting with a colour octet of gluons. We conjecture that leptons and quarks of the lowest generation are bound states ${\nu }_e=\delta \overline{\chi },e=\delta (\chi \chi )P$ and $u=\overline{\delta }\overline{\chi },d=\overline{\delta }(\chi \chi )P$.