2–3. Free directions and trivial families

Kernel $N$ of the rows: dim 152 (104 with the ghost equation). Single-sector blind directions: 69 in $X_{Kch}$ alone, 12 in $X_{c^{\ast }cc}$ alone, 26 in $X_{hhh}$ alone (${\sigma }_0$-closed evanescent cubic structures, candidates for cubic parts of invariant evanescent operators), none in $X_{\bar{c}ch}$ alone. BRST-trivial candidates $\sigma (Y)$, gh $-1$: $Y=K\cdot F(h,h)$ (field redefinition of $h$), $Y=c^{\ast }\cdot G(c,h)$, $Y=\bar{c}\cdot \Phi (h,h)$ (gauge fermion). The relative normalisation of the two pieces of each family was fitted (best uniform $\lambda$: $-1$, $i/2$, $-2$); with it at least 97 directions of $N$ (55 inside the ghost-equation subspace) are trivial, at most 116. At least 36 directions are not shown trivial. Whether they are physical ambiguities (invariant evanescent operators) is not settled, and no explicit operator basis was constructed.