how to separate full name to last name

3:54

2:09

3:23

4:48

3:28

7:20

3:49

6:48

25:18

4:23

3:02

11:50

4:52

3:23

5:19

12:25

2:09

3:55

1:19

1:59

کوتاه

11:07

5:30

1:06

3:14

11:35

کوتاه

12:25

10:17

2:43

1:24

3:16

2:47

16:54

7:14

3:37

7:33

1:49

2:38

7:03