Happy day and Happy day and Happy day but Sad minute so Sad minute drats! {('Happy', 'day'): ['and', 'and', 'but'], ('', 'Happy'): ['day'], ('minute', 'so'): ['Sad'], ('Sad', 'minute'): ['so', 'drats!'], ('day', 'and'): ['Happy', 'Happy'], ('minute', 'drats!'): [''], ('', ''): ['Happy'], ('but', 'Sad'): ['minute'], ('and', 'Happy'): ['day', 'day'], ('day', 'but'): ['Sad'], ('so', 'Sad'): ['minute']}