args before: [[]]
[args were not changed]
result: ""

args before: [["aadfjlajf","aadfjlajf","aadfjlajf"]]
[args were not changed]
result: "aadfjlajf"

args before: [["aa","ab","abc"]]
[args were not changed]
result: "a"

args before: [["ab","ab","abc"]]
[args were not changed]
result: "ab"

args before: [["","ab","abc"]]
[args were not changed]
result: ""

args before: [["adfads","ab","abc"]]
[args were not changed]
result: "a"

args before: [["edfads","ab","abc"]]
[args were not changed]
result: ""