I agree with the (i) (ii) (iii), and the 1 2 3 4 5 -- but the (1) wave is not a proper impulse, so I would view it as the end correction of the last (C) wave. Could be wrong though, not an expert.
wsbza
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@mike-d, yes, sometimes not every move can be easily identified. The decline from 120 to 57.2 seems to be a 3-waves move, so i assume that's an A-B-C correction