Occasionally, he'd wince and apologise for any incoherence.
( Occasionally ( , ( he ( ( 'd ( ( ( wince and ) apologise ) ( for ( any incoherence ) ) ) ) . ) ) ) )
(ROOT (S (ADVP (RB Occasionally)) (, ,) (NP (PRP he)) (VP (MD 'd) (VP (VB wince) (CC and) (VB apologise) (PP (IN for) (NP (DT any) (NN incoherence))))) (. .)))
He winced and apologized for any confusing speech, sometimes.
( He ( ( ( winced and ) ( ( ( apologized ( for ( any ( confusing speech ) ) ) ) , ) sometimes ) ) . ) )
(ROOT (S (NP (PRP He)) (VP (VP (VBD winced)) (CC and) (VP (VBD apologized) (PP (IN for) (NP (DT any) (JJ confusing) (NN speech))) (, ,) (ADVP (RB sometimes)))) (. .)))