Complex sentence: Popescu-Cadem, p.219-222 Cocea's own education was hectic: he flunked out after the 3rd and 7th grades, transferred to Ploieşti, then returned only to pass reexamination.
Split into simpler sentences: Popescu-Cadem, p.219-222 Cocea's own education was hectic. He flunked out after the 3rd and 7th grades, transferred to Ploieşti, then returned only to pass reexamination.