Italy have tough away games against Ukraine and their direct rival Scotland.
England still have to play Russia twice, and then a final day game against Croatia where the pressure could lead to anything happening.
Portugal should make it through without problems IMO.
Spain have the toughest fixtures on paper, but I don't think N. Ireland will be able to maintain their form under Worthington, and Spain are also the only one of these 4 who are at least level on points with their rival (NI) and not behind. So I think Spain will also eventually scrape through.
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Which of these 4 does everyone else think will make it?