I want to slice number of rows into two per group.

So for example if I have 10 rows and I want to slice it into 2 per group then both record should have same id.

Input: 

```
Name 
adc
abc
Cdd
Dee
Eaa

```

Output should be two columns:

```
COUPLEID | NAME
       1   adc
       1   abc
       2   Cdd
       2   Dee
       3   Eaa

```