The Ultimides are
Ultimium - Ul
Gregorium - Gr
Equipsomarowium - Eq
Squashu - Sq
Raturnium - Rt
Tadronettium - Td
Useddhium - Oe
Pyropi - Py
Matsukazium - Mk
Arisakium - Ak
Tolietum - To
Makemakium - Me
Zorkmidium - Zm
Pasteurium - Ps
Massachusettium - Mas