correct way of laying tiles

6:36

18:59

16:41

8:45

12:13

1:22

2:37

4:56

4:42

4:18

4:11

6:44

3:47

6:07

4:28

10:12

3:46

4:34

3:18

10:10

2:52

4:53

6:31

3:41

12:45

4:52

12:30

3:08

19:23

5:54

6:46

14:45

36:41

10:50

00:40

12:15

21:11

7:01

7:00

7:59

14:29

3:13

8:03

5:00

2:31

10:07

2:22

8:39

15:03

6:00

6:47

4:37

4:12

3:35

1:08:28

12:31

6:04

9:00

39:34

9:18