At the same time, the Sudanese regime began to change.
( ( At ( the ( same time ) ) ) ( , ( ( the ( Sudanese regime ) ) ( ( began ( to change ) ) . ) ) ) )
(ROOT (S (PP (IN At) (NP (DT the) (JJ same) (NN time))) (, ,) (NP (DT the) (NNP Sudanese) (NN regime)) (VP (VBD began) (S (VP (TO to) (VP (VB change))))) (. .)))
The Sudan regime stayed the same and never changed.
( ( The ( Sudan regime ) ) ( ( ( ( stayed ( the same ) ) and ) ( never changed ) ) . ) )
(ROOT (S (NP (DT The) (NNP Sudan) (NN regime)) (VP (VP (VBD stayed) (NP (DT the) (JJ same))) (CC and) (VP (ADVP (RB never)) (JJ changed))) (. .)))