Do emojis have their own syntax?

To get data, I showed peo­ple three pic­tures and asked them to “pick the emo­ji sequence that best describes the scene” and then gave them two options that used dif­fer­ent orders of the same emo­ji. Then, once they were done with the emo­ji part, I asked them to “please type a short sen­tence to describe each scene”.