+-----------+--------------+--------------------------+
|Transaction|Customers name|Customers email   |Set    |
+-----------+--------------+--------------------------+
| 1         | John         | jo@gmail.com     | blue  |
| 2         | Mary         | ma@gmail.com     | green |
| 3         | Paul         | pa@gmail.com     | red   |
| 4         | JOHN G.      | jo@gmail.com     | green |
| 5         | Paul Simon   | pa@gmail.com     | blue  |
+-----------+--------------+--------------------------+

|John      | jo@gmail.com |

|JOHN G.   | jo@gmail.com |

|John      | jo@gmail.com |
|Paul      | pa@gmail.com |

|John      | jo@gmail.com |
|Paul Simon| pa@gmail.com |

|Mary      | ma@gmail.com |