 Complete the following phrase:  The first church on the site was built in the Early Middle Ages, possibly as early as the 6th century but certainly by the 8th century. It is first mentioned in 793. Around 1000 the nave was extended toward the west. The second church was built around 1100. This new building had a wider and longer nave and the choir was rectangular with massive walls. The second church was replaced in the mid-12th century by the third church, parts of which still stand today. The third church, a Romanesque building, had a round apse, a rectangular choir and a bell tower on the north side which were probably grafted on the earlier nave. The church was heavily damaged in the 