a-do a-ii aaaa aaab aaad aaai aaas aaba aabb aabd aabi aada aadi aads aaib aaii aais aaoo aasa aasd aasi aass abaa abab abad abai abas abb- abba abbb abbi abbo abbs abda abdi abdo abia abib abid abis aboa abob abod aboo abos abs- absa absd absi abss adaa adab adad adai adao adas adba adbi adda addd addi addo adds adia adib adio adis adob adod adoo ados adsa adsi adso adss aiai aias aiba aibo aida aidb aidi aids aiia aiib aiid aioi aisa aisb aisd aisi aiso aoba aosd aoss asaa asab asad asai asao asas asba asbo asda asdo asds asia asii asio asis asob asod asoi asos assa assd assi asso asss ba-i baaa baad baas baba babb babi babo babs bada badb badd badi bado bads baia baib baid baio bais baos basa basi baso bass bbad bbas bbbb bbbs bbdd bbdo bdii bdos bdsd biad biao bias biba bibb bibi bibo bibs bida bidi bido bids biis bio- bioi bios bis- bisa bisd biso biss boab boad boai boas boba bobb bobi bobo bobs boda bodb bodi bodo bods boi- boid boii bois boob bood boos bosa bosi boso boss bsaa bsas bsbd bsod bsos bssd d-bo daab daad daas daba dabb dabo dabs dada dadi dado dads daia daid daio dais daos dasa dasb dasd dasi dass dbas dbos dbsa dbss dddd ddss dia- diab diad diao dias diba dibb dibo dibs dida didi dido dids diii diis dios dis- disa disd disi diso diss doab doas doba dobb dobi dobs dod- doda dodd dodi dodo dods doid dois doob dood doos dosa dosi doso doss dsba dsda dsoa dsos dssa dssi iaaa iaai iaas iaba iadb iaia iais iasa iasi iaso ibad ibas ibdo ibia ibid ibis ibos ibsa ibss idad idas idda iddo idia idid idio idis idos idsa idso idss iias iida iiii iiio iiis iioi iioo iios iisd iisi ioba iobi iod- ioda iodd iodo ioii ioio iooi iooo ioos ioso is-a isad isai isao isas isba isbd isda isdb isds isia isis iso- isos issa issi isso isss oais oasi oass obad obai obas obba obbo obia obid obis oboi obos obsd obss odai odas odbo odda oddd oddi odds odia odio odis odoo odos odso oiba oido oids oiii oios oisd ooaa ooba oobi ooda oodi ooia ooid oooo ooos oosa oosi osai osas osba osdi osia osii osis osoi osoo osos ossa ossb ossd ossi osso s-ib s-ii s-os saab saad saas saba sabb sabi sabo sabs sada sadb sadd sadi sado sads saia said sais saoi saos sasa sasd sasi saso sass sbaa sbai sbas sbbs sbds sbia sbsa sbsd sbsi sdba sdds sdib sdio sdss siaa siab siai sias siba sibi sibo sibs sida sidd sidi sido sids siod sios sisa sisd sisi siss soad soas soba sobo sobs soda sodd sodo sods soia sois sood soos sosa sosi soso soss ssaa ssab ssao ssas ssdd ssid ssis sssa sssb sssi ssss