Maybe it is just me, but I find it difficult to memorize hyphenated principal part forms (i.e. praetexo, -ere, -ui, -xtus) on memrise, even for words that already know very well. Cutting corners here is not doing anyone any favors. Could some of us curators make an effort to fix some of these vocabulary issues by filling in the complete principal part forms, like they do on Greek flash cards? Also, if you are submitting new words could you make a mental note to do that as well? Unless, that is, I am the only one having problems with this. Just know, you are not going to see any hyphens when you are out translating real Vergil. It's best to memorize things right the first time.