Gnome's Teams

In 2020, Santa Claus will not be able to leave the house to deliver gifts due to the Coronavirus pandemic. So he ordered his gnomes to deliver on Christmas Day. As they are quite inexperienced, they will split into several teams made up of three members: a leader, a delivery man and a sled driver. Santa's plan is for team leaders to always be the oldest gnomes, so he asked everyone to write their names and ages on a list. As you are a programmer gnome, you decided to help Santa Claus organize the list and assemble the teams from it.

Here are some rules:
- The list must be organized in descending order of age;
- If two gnomes are the same age, they must be organized in ascending order of name;
- There are no two gnomes of the same name;
- No gnome has more than 20 characters in his name;
- The gnomes on the list are between 10 and 100 years old;
- The first 1/3 of the gnomes (the oldest), will be the team leaders;
- The order of the delivery gnomes and pilots follows the same logic as the leaders. Ex) If there are 6 gnomes on the list, there will be two teams, where the oldest gnome is the leader of team 1, and the second oldest is the leader of team 2. The third oldest is the delivery man for team 1 and the fourth oldest delivery man for team 2. The fifth is a sled driver for team 1 and the last is a driver for team 2;