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Northern Ireland joined England and Wales in the last 16 of the European Championship after finishing as one of the best third-placed teams.
In an expanded Euros, the four best third-placed teams advance, along with the six group winners and runners-up.
Michael O’Neill’s side lost 1-0 to Germany on Tuesday but finished third in Group C, with their tally of three points enough to see them advance on goal difference.
They meet Wales or hosts France next.
The tie against the Welsh would take place on Saturday (kick-off 17:00 BST) in Paris, or they will play France in Lyon on Sunday (14:00 BST).
Roy Hodgson’s England side play their last 16 match on Monday at 20:00 BST against the side that finishes second in Group F.
Group A: France and Switzerland
Group B: Wales and England
Group C: Germany and Poland
Group D: Spain and Croatia
Group E: Italy
Group F: Hungary
Best third-placed teams: Slovakia and Northern Ireland
Who else can still go through?
A further two best third-placed spots are still available for the last 16 stage, with Albania clinging on having gained three points in Group A.
Two further places are still up for grabs in Groups E and F who play their final group matches on Wednesday.
Who is out?
Romania and Russia managed just one point each and Ukraine failed to collect a goal or a point.
Source:: BBC UK