OBAMA\S MOST FREQUENT TRIGRAMS with Penn's TREEBANK


('IS', 'WATCHING', 'YOU,') : 2 
('BIG', 'BROTHER', 'IS') : 2 
('the', 'wall.', 'It') : 2 
('the', 'Thought', 'Police') : 2 
('no', 'way', 'of') : 2 
('part', 'of', 'the') : 2 
('BROTHER', 'IS', 'WATCHING') : 2 
('YOU,', 'the', 'caption') : 2 
('WATCHING', 'YOU,', 'the') : 2 
('picked', 'up', 'by') : 1