def daisy_chain_from_acquisitions(acquisitions):
    """Given a list of acquisiton dates, form the names of the interferograms that would create a simple daisy chain of ifgs.
    Inputs:
        acquisitions | list | list of acquistiion dates in form YYYYMMDD
    Returns:
        daisy_chain | list | names of daisy chain ifgs, in form YYYYMMDD_YYYYMMDD
    History:
        2020/02/16 | MEG | Written
    """
    daisy_chain = []
    n_acqs = len(acquisitions)
    for i in range(n_acqs-1):
        daisy_chain.append(f"{acquisitions[i]}_{acquisitions[i+1]}")
    return daisy_chain