Table:
0
A
B
C
D
E
F
G
H
I
1
author id
author tutor atb
login name
password
personal name
middle name
family name
gender mf
address line 1
2
1
331
jmckenzie
c40fa148bdd0d2d45cd6e9ec1e685750fe07f81b
Cathrine
Ruthie
Grant
0
756 Monahan Mews
Spinkashire, NJ 64230-5098
3
2
975
heidenreich.ara
24b0ee84063c3b017ab1839e01b7280f47f7c7c2
Retha
Corene
Armstrong
0
98623 Huels Manor
Jasttown, DE 31611
4
3
349
clementina29
cdaf6c3483f19e2253659a40a3aab786a3390f78
Darius
Ethyl
Reichel
0
99296 Keeling Courts
North Audreanne, IL 28272
5
4
782
wlehner
d34378200c9b5f72d3039fa640e7920aaec0fdf2
Julio
Aniyah
Nader
1
644 Montana Hill Suite 489
Daijamouth, CA 19587-4254
6
5
388
nyundt
2c196efe8aee23a1b9a7e752fe63029c5879af6f
Yessenia
Zena
Barrows
1
5284 Champlin Roads
Cassinport, WY 54636
7
6
817
al75
e96c0bcbbbb14747747a56ff4c17354f343a5b4f
Adolf
Keira
Rohan
1
92220 Hellen Skyway Apt. 635
Rennerview, MS 81036
8
7
869
marty.bergnaum
3e2f7bf1e6acf0d616a8703ee0050fba13bc007f
Logan
Ethelyn
Treutel
1
67541 Osborne Creek Suite 532
Bernhardview, WV 30288-1050
9
8
557
medhurst.alvah
02d64f11de97436343a0beba41bfcf69af61be1e
Kelsie
Kennith
Rowe
0
0256 Walter Meadows Suite 523
Norbertoborough, AZ 49193
10
9
505
antonetta19
4d8e909ae9b8888c93a2c5f1eccbd0c4ac6a01c3
Georgiana
Mathew
Zboncak
0
445 Quigley Fall
Port Antonette, IN 81992-1255
11
10
159
adam.rippin
b517a107b5f08fafe9628e88e7263a6f3a4a55c0
Deja
Joyce
Champlin
1
22575 Effertz Neck Apt. 046
Port Scotty, NY 67108-9197
12
11
229
dschaefer
4f149f75ecd84afcdf27343509cdd03d81edb119
Ciara
Alejandra
Greenholt
0
425 White Brooks
Emmaleefort, IN 97850-2510
13
12
847
nellie.mosciski
a48e25a58b3088e9cfdaca61130555ed2c772452
Sheldon
Jayce
Kreiger
1
513 Collins Plain Apt. 829
Clementinaville, VT 59908-2793
14
13
613
qking
6b9979a83b4a9e03ead034c8de47f1b013a3d3af
Madonna
Jaclyn
Effertz
1
139 O''Conner Circles
Virginieland, KS 23365
15
14
833
fiona77
120ac8a5744f5b710ecaebbd8dd1633e3e33886e
Dusty
Amani
Crist
1
3602 Boehm Forest
Zulaufton, DC 35229-0366
16
15
974
ekshlerin
6d587cec8006e3a40565e1dad2c5b5b12b475b8f
Shakira
Fritz
Haley
0
8928 Kunze Valley Apt. 747
South Jedidiahmouth, DE 28167

Questions and formulas:
Question: Authors' surnames and login details 
Formula: UNIQUE(HSTACK(C1,G1,A1))
Formula2: UNIQUE(HSTACK(C2:C16,G2:G16,A2:A16))
Level: easy
Question: the login names and family names of the authors 
Formula: UNIQUE(HSTACK(C1,G1,A1))
Formula2: UNIQUE(HSTACK(C2:C16,G2:G16,A2:A16))
Level: easy
Question: The login and family names of the authors.
Formula: UNIQUE(HSTACK(C1,G1,A1))
Formula2: UNIQUE(HSTACK(C2:C16,G2:G16,A2:A16))
Level: easy