a-do aaaa aaab aaad aaas aaav aaba aabb aabd aada aads aaoo aasa aasd aass aava abaa abab abad abas abb- abba abbb abbo abbs abda abdo aboa abob abod aboo abos abov abs- absa absd abss abva abvd adaa adab adad adao adas adba adda addd addo adds adob adod adoo ados adsa adso adss advb advs aoba aosd aoss asaa asab asad asao asas asba asbo asda asdo asds asob asod asos assa assd asso asss asva asvd asvs avab avao avas avda avos avva avvo baaa baad baas baba babb babo babs bada badb badd bado bads baos basa baso bass bava bbad bbas bbbb bbbs bbdd bbdo bdav bdos bdsd boab boad boas boba bobb bobo bobs boda bodb bodo bods boob bood boos bosa boso boss bova bovo bsaa bsas bsbd bsod bsos bssd bvds d-bo daab daad daas daba dabb dabo dabs dada dado dads daos dasa dasb dasd dass dava dbas dbos dbsa dbss dddd ddss doab doas doba dobb dobs dod- doda dodd dodo dods doob dood doos dosa doso doss dsba dsda dsoa dsos dssa dsvd dvas dvbs dvda dvds dvoa oass oavs obad obas obba obbo obos obsd obss obvs odas odbo odda oddd odds odoo odos odso odva ooaa ooba ooda oooo ooos oosa osas osba osdv osoo osos osov ossa ossb ossd osso ovda ovo- ovod ovoo s-os saab saad saas saba sabb sabo sabs sada sadb sadd sado sads saos sasa sasd saso sass sava savo savs sbaa sbas sbbs sbds sbsa sbsd sdba sdds sdss soad soas soba sobo sobs soda sodd sodo sods sood soos sosa soso soss sosv sova sovo sovs ssaa ssab ssao ssas ssdd sssa sssb ssss svdo svod vaad vaas vabs vada vado vads vas- vasa vaso vass vava vavs vdso voad voda vodo vosa voso voss vvob vvsb vvvv