I will start by suggesting 5 boy names and 5 girl names, and the next poster will respond with a brother for each boy and a sister for each girl. BUT, in this version the siblings’ names must go in alphabetical order. So the first group’s initials will be: A & B, B & C, C & D, D & E, E & F, and the next group will be: B & C, C & D, E & F, F & G, G & H…and so on. When you get to Z, just start back over with A.
Here is the list of names to start: