Most of the breaks in the (a, -a, b, c, -c, d) pattern look like either the +/- pair was skipped entirely or the unpaired value was skipped. My guess is the complete message consists of alternating “packets” of either a single value or a +/- pair, and each packet has some chance to be omitted (or they are deterministically omitted according to some pattern).
Most of the breaks in the (a, -a, b, c, -c, d) pattern look like either the +/- pair was skipped entirely or the unpaired value was skipped. My guess is the complete message consists of alternating “packets” of either a single value or a +/- pair, and each packet has some chance to be omitted (or they are deterministically omitted according to some pattern).