AA       More Than One Year
AD       Average Daily
AM       Average Monthly
AN       Annual
AP       Academic Period
AY       Average Year
BD       Buyer's Manufacturing Days
BM       Bimonthly
BW       Bi-weekly
CC       Cycles
CY       Calendar Year
DA       Calendar Days
DW       Work Days
DY       Day
EL       Option Period at End of Lease
F1       Fiscal Year Plus One Year
F2       Fiscal Year Plus Two Years
FY       Fiscal Year
HR       Hours
ID       Inception to Date
KK       Maximum Calendar Days
KL       As Required
LN       Lease Termination Notification Period
LT       Lease Term
MD       Month to Date
MI       Minutes
MO       Month
MS       Mean Time Between Stops
MT       Mean Time Between Failure
NX       Next Six Months
PA       Plan Year to Date
PD       Period to Date
PM       Preceding 12 Months
PR       Preceding Six Months
Q1       First Quarter
Q2       Second Quarter
Q3       Third Quarter
Q4       Fourth Quarter
QY       Quarter of a Year
SA       Semiannual
SD       Seller's Manufacturing Days
SH       Shift
SM       Semimonthly
SP       Summer Period
TY       Tax Year
WK       Weeks
WW       Work Week
WY       Weekly
YD       Year to Date
ZZ       Mutually Defined