Complex sentence: From 1375 to 1392 John ruled with his brothers Stephen III and Frederick, 1392 to 1395 alone in Bavaria-Munich, 1395 to 1397 with Stephen III again after an armed conflict between both brothers.
Split into simpler sentences: From 1375 to 1392 John ruled with his brothers Stephen III and Frederick. Then John ruled alone in Bavaria-Munich for three years until 1395,1395 to 1397 he shared his power again with Stephen III again after an armed conflict between both brothers.