Proving the conjecture is equivalent to constructing a PCP that reads 2 symbols and accepts iff these symbols satisfy a bijective constraint.

The frameless droplights are fitted with an improved Beclewat catch, which is easier to operate than earlier designs.

With shame remembers, while himself was one / Of the same herd, himself the same had done.

The conversation was in the argot of the trade, full of acronyms and abbreviations that made no sense to the uninitiate.