Can I get with writing a programme run through observations and identify instances where the preceding and following observation are the same and the index (middle) observation equals to a specific value i.e. second observation for oo1and third observation for oo7. oo1 3 oo1 4 oo1 3 oo2 4 oo2 4 oo2 4 oo3 4 oo3 2 oo3 4 oo4 4 oo4 3 oo4 2 oo4 4 oo5 4 oo5 4 oo5 2 oo5 3 oo5 2 oo5 1 oo6 2 oo6 2 oo6 4 oo6 3 oo6 2 oo6 1 oo7 2 oo7 2 oo7 4 oo7 2 oo7 2 oo7 1
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