introverte = ["Ola", "Timothy", "Kari"]
ekstroverte = ["Adam", "Petra", "Jonatan"]

assert len(introverte) == len(ekstroverte)

bord = []

for i in range(len(introverte)):
    bord.append(introverte[i])
    bord.append(ekstroverte[i])

print(bord)

for i in range(len(bord) - 1):
    print(f"{bord[i]}, {bord[i + 1]}")