It would be cool if subjects were incorporated into verbs, although that's probably just my Spanish leaking out. Look, though!
(Mi) provonas: I try
(Ni) provojnas: we try (Vi) provunas: you try
(Li) provanas: he tries
(Ŝi) provenas: she tries
(Ĝi) provinas: it tries
(Ili) provajnas: they try
Same for provonis (I tried), provonos (I will try), etc. Ne ke tio okaz(in)os.