Eastward expansion of "Bijelo Brdo" villages along the Mureş continued in the 11th century. Cauldrons and huts with hearths carved into the soil were the characterizing items of the period. Nevertheless, semi-sunken huts with stone ovens from Sfântu Gheorghe, Şimoneşti and other villages evidence the survival of the local population. The lands between the Carpathians and the Tisa were plundered by Pechenegs in the 1010s and in 1068, by Ouzes in 1085, and by Cumans in 1091. Cluj, Dăbâca and other royal forts built of earth and timber were strengthened after the 1068 attack. In these forts appeared the so-called "Citfalău cemeteries", dependent upon late 11th-century royal legislation forcing commoners to set up their graveyards around churches.