Right, that's essentially the same thing, with aleph being a shortened way of saying rishon and bet being a shortened way of saying sheni. My original point was

Right, that's essentially the same thing, with aleph being a shortened way of saying rishon and bet being a shortened way of saying sheni. My original point was that I'd never heard of "ve'adar". Apparently as the Wikipedia entry says, that's less common. Curious if the Mishna or Talmud ever uses "ve'adar" (I've never seen it, but doesn't mean it doesn't exist)