By Simon Johnson and Anna Ringstrom STOCKHOLM (Reuters) -The head of Sweden’s Moderate Party, Ulf Kristersson, said on Wednesday he would begin the work of forming a new government after Prime Minster Magdalena Andersson conceded her Social Democrats had lost the weekend’s general election. The Moderates, Sweden Democrats, Christian Democrats and Liberals appear set to get 176 seats in the 349-seat parliament to the centre-left’s 173 seats, according to the latest figures from the election authority. A handful of votes remain to be counted, but the result is unlikely to change significantly. “…