Let’s see: Iceberg, romaine, arugula, Boston, frisee.
Sorry, I meant about “Let us.” If you make that into a contraction, it becomes “Let’s.” Without the apostrophe, it means “allows”: “The computer lets you correct typing errors easily.”
Let’s hear it for the computer. Sometimes even autocorrect gets it right. But you still have to proofread; don’t trust it.