Keyword mb6 was used in the provided list of websites.
Fundacja Win-Win |http://pageoverview.com/website-report/winwin.org.pl
74-322 220-602 1Y0-308 510-888 251-223 070-631 HP0-S30 70-551-VB CMS7 ST0-119 LOT-404 ICDL-IT 000-448 RH202 C2020-105 MB6-507 GB0-500 250-222 9L0-064 LOT-917 74