[ɚ] is an R-coloured vowel; its non-rhotacised form is [ə].

Interleaved barcodes must be deinterleaved before their demultiplexation.

BARDOLPH: Why, sir, for my part, I say the gentleman had drunk himself out of his five sentences. / EVANS: It is his 'five senses'; fie, what the ignorance is! / BARDOLPH: And being fap, sir, was, as they say, cashier'd; and so conclusions passed the careires.

Let's try to put this question to rest once and for all.