Letters Inside the Orbs?

Photo date: January 27, 2017. Photographer: Mark Mahin.

I took the photos below while photographing nothing but ordinary drops of pure, clean water falling against a dark background. We see some orbs that seem to have characters inside them. I can see what looks like an "I," and "A," a "P" and a "4."

On the same day I photographed the weird image below, showing crescent shapes and a strange-looking row on the right.