Basically, it's just the first letter and the first three of the second word. For the most part. I have some with longer words, such as asub = and subsequently, but I want to see if it's useful to me for the short words, too.

awas = and was
ahas = and has
ahad = and had
adev = and developed
awill = and will
abeg = and began
adec = and decided
arec = and received
auw = and underwent
awit = and with
ahis = and his
aher = and her
aare = and are
awer = and were
aover = and over