A: The other list
Q: If the head of lst1 is less than the head of lst2, what do you return?
A: The result of consing the head of lst1 onto the result of merging the tail of lst1 with lst2
Q: If the head of lst2 is less than the head of lst1, what do you return?
A: The result of consing the head of lst2 onto the result of merging the tail of lst2 with lst1
Q: If the head of lst1 is equal to the head of lst2, what do you do?
A: