Units
P - Probe
Z - Zealot
D - Dragoon
T - High Templar
K - Dark Templar
S - Shuttle
V - Reaver
O - Observer
S - Scout
C - Carrier
A - Arbiter
O - Corsair
Buildings
B - Basic Structure.
Then...
N - Nexus.
P - Build Pylon.
A - Assimilator.
G - Gateway.
F - Forge.
C - Photon Cannon.
Y - Cybernetics Core.
B - Shield Battery.
V - Advanced Structures.
Then....
R - Robotics Facility.
S - Stargate.
C - Citadel of Adun.
B - Robotics Support Bay.
F - Fleet Beacon.
T - Templar Archives.
O - Observatory.
A - Arbiter Tribunal.
Special Abilities
T - Psionic Storm (Templar).
L - Hallucination (Templar).
R - Recall (Arbiter).
T - Stasis Field (Arbiter).
D - Disruption Web (Corsair).
F - Feedback (Dark Archon).
C - Mind Control (Dark Archon).
E - Maelstrom (Dark Archon).
Other
L - Load (Shuttles).
U - UnLoad (Shuttles).
R - Recharge Shields (Shield Batteries).
I - Build Interceptors (Carriers).
R - Build Scarabs (Reavers).
Upgrades
Forge
W - Ground Weapons.
A - Ground Armor.
S - Plasma Shields.
Cybernetics Core
W - Air Weapons.
A - Air Armor.
S - Develop Singularity Charge.
Citadel of Adun
L - Develop Leg Enhancements.
Robotics Support Bay
S - Scarab Damage.
C - Increase Reaver Capacity.
G - Gravitic Drive (Shuttles).
Templar Archives
P - Psionic Storm.
H - Hallucination.
K - Khaydarin Amulet.
M - Mind Control.
E - Maelstrom.
T - Argus Talisman.
Fleet Beacon
A - Apial Sensors.
G - Gravitic Thrusters.
C - Increase Carrier Capacity.
D - Disruption Web.
J - Argus Jewel.
Observatory
G - Gravitic Booster.
S - Sensor Array.
Arbiter Tribunal
R - Recall.
S - Stasis Field.
K - Khaydarin Core.