It is SCO.
SD
It's yd
rel. (religion)
COMPLEMENTS
Either "abbr." or "abbrev."
The abbreviation for Idaho is ID.
IOC IOC
Missouri (MO)
The word agreement is not usually abbreviated. However, it could possibly be written as "ab", "abbrev", or "abb". The most common would probably be "abbrev".
The abbrev. For lake ontario is O.
cm - abbrev. for centimetre