aaaa aaab aaad aaas aaba aabb aabd aada aads aadu aasa aasd aass aasu aaus abaa abab abad abas abau abb- abba abbb abbs abda abdu abs- absa absd abss absu abua abud abus adaa adab adad adas adba adda addd adds addu adsa adss adua adub asaa asab asad asas asau asba asbu asda asds assa assd asss assu asub asud asus auaa ausa ausd ausu baaa baad baas baba babb babs babu bada badb badd bads badu basa bass basu bau- baud bbad bbas bbau bbbb bbbs bbdd bdsd bsaa bsas bsbd bssd buad buba bubb bubs bubu buda budb budd buds budu busa buss busu buus daab daad daas daau daba dabb dabs dabu dada dads dadu dasa dasb dasd dass daub daud daus dbas dbsa dbss dbus dddd ddss ddub dsba dsda dssa duaa duab duad duas dub- duba dubb dubs dubu duda dudd duds dudu dusa saab saad saas saba sabb sabs sabu sada sadb sadd sads sadu sasa sasd sass saua saud saus sbaa sbas sbbs sbds sbsa sbsd sbus sdau sdba sdds sdss sdsu ssaa ssab ssas ssau ssdd sssa sssb ssss suas sub- suba subb subd subs suda sudd suds sus- susa susd suss susu suus uasa uasd uaua ubba ubud udaa udad udas udau udds udsd us-a usaa usad usas usba usbs usda usds ussa ussb usss ussu usua usus uuuu