How to bang a specific message every two randomisations?

    Benson's icon
    Benson
    Mar 24 2016 | 10:18 pm
    So the sequence would be 1. One of the messages from 1-4 2. The 0 message 3. One of the messages from 1-4 4. The 0 message
    etc...
    Thank you very much for any help!