  Let \[ \begin{array}{c}\overline{A} = ABCBA\ CBC\ ABCBA,\\ \overline{B} =
BCACB\ ACA\ BCACB,\\ \overline{C} = CABAC\ BAB\ CABAC. \end{array} \] The Leech
sequence $L$ is the squarefree sequence obtained as the limit of the
palindromes \[ A, \overline{A}, \overline{\overline{A}}, \ldots . \] In order
to specify a certain class of pseudorecursive varieties of semigroups, it is
helpful to have a squarefree term in 3 variables such that no substitution
instance occurs as a subterm of $L$. We show that $\kappa_1 = aba\ cbc\ aba\ c$
is such a term. Except for one situation, the doubly-linked term $\kappa_2 =
aba\ cbc\ aba$ will serve, and we focus on it.
