#!/bin/bash
sed '1d;2d;s/ .*//'|sort|uniq -c|sed -Ez 's/\s*(\S+) (\S+)/\2_\1/g'
IyEvYmluL2Jhc2gKCnNlZCAnMWQ7MmQ7cy8gLiovLyd8c29ydHx1bmlxIC1jfHNlZCAtRXogJ3MvXHMqKFxTKykgKFxTKykvXDJfXDEvZyc=
NSAgCkEgbXlzdGVyeSBjaGVtaWNhbCBmb3JtdWxhLi4uICAKQmEgICAgICAwLjAwMCAgIDAuMDAwICAwLjAwMCAgCkhmICAgICAgMC41ICAgICAwLjUgICAgMC41ICAKTyAgICAgICAwLjUgICAgIDAuNSAgICAwLjAwMCAgCk8gICAgICAgMC41ICAgICAwLjAwMCAgMC41ICAKTyAgICAgICAwLjAwMCAgIDAuNSAgICAwLjUgIA==
5
A mystery chemical formula...
Ba 0.000 0.000 0.000
Hf 0.5 0.5 0.5
O 0.5 0.5 0.000
O 0.5 0.000 0.5
O 0.000 0.5 0.5