two letters:

AB - Apportioned Bus

AC - Anderson College

AD - Adjutant General

AF - U.S. Armed Forces Retired

AF/A - Air Force Academy

AG - Farm Bureau (Our Farms/Our Future)

AH - Homeownership

AI - Clemson 2016 Football Nat'l Championship

AK - Alpha Kappa Alpha Fraternity

AL - University of Alabama

AM - Antique Motorcycle

AN - Autism Awareness

AQ - Cure Childhood Cancer

AR - Amateur Radio

AS - Appalachian State University

AU - Allen University

AV - antique auto/vehicle (hidden)

AZ - Parrothead

BB - Greenville Children's Hospital

BC - bus - common carrier

BD - Mississippi State Univ. Bulldogs

BE - Arts

BK - Share The Road

BM - BM Manufacturer (? possibly BMW)

BP - Boy Scouts of America/Eagle Scouts of America

BU - bus

BY - Boykin Spaniel Foundation

CA - Cattlemen's Association

CB - Breast Cancer Awareness

CC - County Council member

CD - Combat Disabled Veteran

CF - Carolina Panthers

CG - County Government

CH - College of Charleston

CL - Columbia College

CN - Coroner

CO - Coastal Carolina University

CP - Claflin College

CR - Reduce/Recycle/Reuse

CS - Charleston Southern University

CT - camper trailer

CV - Sons of Confederate Veterans

DC - Chiropractic Association

DC/N - Navy Cross

DF - Distinguished Flying Cross

DL - Donate Life

DM - Distinguished Medal (followed by another letter for branch of service)

DP - Delta Sigma Theta Sorority

DS - Mothers Against Drunk Driving

DU - Ducks Unlimited

DV - Disabled Veteran

EA - Emergency Medical Services

ED - public college athletic departments, vehicles on loan

EF - Alpha Phi Alpha Fraternity

EM - Emergency Medical Technician

EN - unknown

EQ - Equality

ER - Erskine College

EU - Education (hidden)

FF - Firefighter

FL - Former Legislator

FM - farm (now used as a suffix)

FP - Zeta Phi Beta Sorority

FR - Forestry Association

FS - Florida State University

FT - Secular Humanists

FV - fleet vehicle

GA - University of Georgia

GF - Golf

GS - Gold Star Family

GT - In God We Trust (internal code)

HA - Ancient Free Masons

HC - transporter truck

HF - Aviation Hall of Fame

HH - Heritage Classic

HI - Hunting Island

HK - Virginia Tech

HL - H.L. Hunley

HP - Highway Patrol

HS - high schools (Wilson H.S., Nortwestern H.S.)

HT - house trailer

HV - Handicapped Veteran

IF - unknown

II - SC Stands With Israel

JC - I Believe

JD - unknown

JM - Multiple Sclerosis Society

KB - "Keep It Beautiful" (Wildflower)

(displayed code E)

KC - Surfrider Foundation

KE - Ohio State University

KI - Kiwanis International

KM - Kappa Alpha Psi

KS - Camp Sertoma

KT - camper trailer

KV - Korean Veteran

LC - Limestone College

LE - Fraternal Order of Police

LH - Morris Island Lighthouse

LK - Elks Association

LM - unknown

LN - Lions Club

LS - limousine

LV - low speed vehicle

MA - manufacturer

MC - Municipal Council member

ME - Medical University of S.C.

MG - Municipal Government

MH - Morris College

MM - Dr. Mary McLeod Bethune

MP - moped

MR - Manufacturer/Repossessor

MS - Omega Psi Phi Fraternity

MT - North Greenville College (discontinued)

MU - MUSC Children's Hospital

MW - Coastal Conservation Association

MY - Mayor

MZ - unknown

NA - U.S. Naval Academy

NB - USC Baseball National Championship

NC - Newberry College

NF - Nurses Care

NG - National Guard

NU - North Greenville University

NR - unknown

NZ - NASCAR generic. no longer issued

PC - Presbyterian College

PD - Earth Echo (Protect Dolphins)

PH - Purple Heart

PK - NC State University

PL - Choose Life

PM - temporary Special Permit

PN - Penn Center

PS - 1/2 year Truck

PT - Apportioned/permanent trailer; motor carrier (suffix 2014-)

PU - Purdue University

PV - Apportioned/permanent trailer (followed PT)

QD - Quality Deer Management

RA - Prince Hall Order of the Eastern Star Mason

RC - rescue vehicle

RD - Research & Development

RE - Legislator

RF - Gone Fishing

RG - Regional Government

RH - Ronald McDonald House Charities

RJ - unknown

RM - Rocky Mountain Elk Association

RS - Troopers Association

RT - Coker College

SB - Bronze Star Veteran

SC - State Guard. no longer issued.

SD - Square & Round Dancers

SE - Senator (State)

SF - Marine Corps League

SG - State Government (suffix 2014-)

SH - Shag (hidden before 2015)

SI - Phi Beta Sigma

SM - special mobile vehicle

SN - No More Homeless Pets

SP - Special Olympics

SR - Shriners

SS - Silver Star Veteran

ST - Support Our Troops

TC - Trees SC

TD - Tree My Dog (Coonhunters)

TH - University of North Carolina

TK - Technology Alliance

TL - trailer & apportioned ♦

TM - Prince Hall Masons

TN - University of Tennessee

TP - temporary

TS - Tennis Patrons Foundation

TU - Trout Unlimited

TX - taxi

TZ - temporary motorcycle Special Permit

UC - unknown

UF - University of Florida

UP - permanent utility trailer

US - U.S. Military Reserve and Service Medals

US/N - Naval Petty Officer

UT - utility trailer

UU - unknown

VA - Veterans' Administration

VC - Voorhees College

VF - Volunteer Fireman

VL - American Red Cross

VT - Veteran

VV - Vietnam Veteran

WA - wholesale/auction

WB - USC Women's Basketball Nat'l Championship

WD - Palmetto Health Children's Hospital

WE - Auburn University

WF - Beaufort Water Festival

WL - DNR Wildlife series

WP - West Point

WS - Ancient & Free Masons

WT - Wild Turkey

WW - World War II Veteran

WX - Wholesaler (discontinued)

WZ - handicapped motorcycle

WZ previously Wholesaler Motorcycle (discontinued)

XA - Antique Dealer

XP - Heavy Duty Truck Dealer

XX - Auto/Truck Dealer

XZ - motorcycle dealer

YJ - Georgia Tech

Z* - all prefixes motorcycle (ZA reserved for Antique m/c)