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It's a bit daunting at first, but once you get a hang of it, it repeats with mostly all verbs.
To work = Raditi
Radi (m, f, n) = work(s); rade = work (plural)
past:
Radio (m); radila (f); radilo (n) - all singular
Radili (m); radile (f); radila (n) - all plural.
Present:
Radim (ja); Radiš (ti); Radi (on, ona, ono)
Radimo (mi); Radite (vi); Rade (oni, one, ona)
Future:
Radiću (ja); Radićeš (ti); Radiće (on, ona, ono)
Radićemo (mi); radićete (vi); Radiće (oni, one, ona)
Also for future:
(Ja) ću raditi; (Ti) ćeš raditi; (on, ona, ono) će raditi
(Mi) ćemo raditi; (Vi) ćete raditi; (oni, one, ona) će raditi
This second from is mostly how you use it, and if you take a look, after learning pronouns all you need to learn are ću-ćeš-će-ćemo-ćete-će while the verb it self remains the same :)
Hope this helps.