Add Second Species (2:1) counterpoint to the provided cantus firmus, being sure to use downbeat consonances exclusively while avoiding parallel/direct fifths/octaves. Label each harmonic interval number between the staves in the manner shown in the first measure, using a simple interval number even if the true interval is a compound interval (e.g. write "3" instead of "10" even if the interval is truly a tenth). The first two interval number labels have been done for you. Remember that contrary motion is always good!
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