Thanks! This is great, other than it's showing MA for both March and May, JU for June and July etc. I guess that's an issue since we're just cutting off anything past the 2nd letter. These are the abbreviations we use:
January: JA
February: FE
March: MR
April: AL
May: MA
June: JN
July: JL
August: AU
September: SE
October: OC
November: NO
December: DE
I'm sure this makes everything way more complicated.