Now you can't get double adverbs (i.e. one before and one after the verb) as was previously the case.
I've also added a new group of words - the connectives. Now, sentences can start with a connective word (e.g. but, however, although, while, meanwhile, instead, and, or, for, suddenly, as, like etc.) These seem to give the randomized poetry a bit more flow; slightly less 'choppy' than before.