To expand on Vityou's hint a bit: You have already written a function that lets you answer the question "Is it true that this word appears in this list?" You now need to answer the following: "Is it true that this word appears in this list? And is it true that this word appears in this other list?"
Given the code that you already wrote and the hint that Vityou provided, how might you express this? -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
