a-ii aaaa aaab aaac aaaf aaai aaar aaas aaba aabb aabc aabi aaca aacb aacc aacf aaci aaco aacr aacs aafa aafb aafc aaff aafi aaib aaic aaii aais aaoo aara aarc aari aaro aars aasa aasc aasf aasi aass abaa abab abac abaf abai abar abas abb- abba abbb abbi abbo abbr abbs abca abcb abcc abcf abci abcr abcs abff abia abib abic abir abis aboa abob abof aboo abor abos abra abrc abri abro abrs abs- absa absf absi abss acaa acab acac acai acar acas acba acca accc accf acci acco accs acfc acfi acfs aci- acia acic acif acir acis acoa acor acos acr- acra acrc acri acro acrr acrs acsa acsc acsi acss afaa afao afar afbs afca afcb afcc afci afcs affa affc affi affo affs afia afib afif afir afis afoa afoo afor afr- afra afrc afri afro afrs afsa afsb afsc aiai aias aiba aibo aica aicc aicf aicr aics aiff aifs aiia aiib aiic aiir aioc aioi aira airi airo airs aisa aisb aisi aiso aisr aoba aoca aocs aora aorb aors aoss arab arac araf arai arar aras arba arbi arbs arc- arca arci arco arcs arfa arfb arfc arff arfs aria arib arif arii ario aris aroa arob aroi aroo aror aros arr- arra arrc arri arro arrr arrs ars- arsa arsc arsi arso asaa asab asac asaf asai asao asar asas asba asbo asc- asca ascb ascc asci asco ascr asfa asfi asia asic asif asii asio asir asis asob asoc asof asoi asor asos asra asrc asro asrs assa assc assi asso assr asss ba-i baaa baaf baar baas baba babb babi babo babr babs bac- baca bacc baci baco bacs bafc baff bafo baia baib baic baio bair bais baos bar- bara barb barc barf bari baro barr bars basa basc basf basi baso bass bbas bbbb bbbs bbci bbfc bbrc bcaa bcar bcas bcbc bcbs bcca bccc bcci bccs bcfc bcia bcis bcof bcor bcos bcra bcrs bcsa bcsc bcss bfas bfca bfcs bffs bfsi bfsr biaf biao biar bias biba bibb bibi bibo bibs bica bicc bici bico bics bifa biff bifi biis bio- bioc bioi bios bira birb biri biro birr birs bis- bisa bisc biso biss boab boac boai boar boas boba bobb bobi bobo bobs boca boco bocs bofa boff bofs boi- boii bois boob booc boof boor boos bor- bora borf bori boro borr bors bosa bosc bosi boso boss brab brac braf brai brao bras brca brcb brfc bria bric brio bris broa brob broc broo bror bros brrr brrs brsb brsr bsaa bsac bsas bsci bscs bsfa bsfc bsff bsfs bsic bsos bsra bssc c-bo caaa caab caac caaf caas caba cabf cabi cabo cabs cac- caca cacc caci caco cacr cafa cafb cafc caff cafs caia caib caic caio cair cais caoi caor caos cara carb carc carf cari caro carr cars casa casb casc casi caso casr cass cbac cbar cbbc cbbs cbca cbcc cbcr cbcs cbfb cbfc cbia cbir cbsa cbsc cbsi ccaa ccab ccac ccaf ccai ccar ccas ccba ccbc ccca cccb cccc cccf ccci cccs ccfa ccfc ccff ccfi ccic ccii ccir ccis ccob ccoc ccra ccrc ccrf ccri ccrs ccsa ccsf ccsi ccss cfaa cfab cfac cfao cfar cfbc cfbr cfbs cfca cfcb cfcf cfco cfcs cffb cffr cfia cfoa cfor cfos cfra cfrb cfsa cfsi ciaa ciao ciar cias ciba cibc cibi cibo cica cicc cici cico cicr cics cifa ciff cifs ciia ciii ciis ciob cior cios cira cirb circ ciri ciro cirr cirs cis- cisa cisc cisr ciss coai coas coba cobb cobi cobo cobs coca coco cofc coff cofi cofs coia coif coir cois coob coof coos cor- cora corb corc corf cori coro corr cors cosa cosc cosi coso coss crab crac craf crai crar cras crbc crca crcc crcr crfc crfs cria crib cric crif cris crob croc croo cror crsa crss csaa csab csac csao csar csas csbf cscb cscc cscf csci csco cscr cscs csfc csfr csia csib csio csir csis csob csor csos csra csrc csrs cssa cssr faaa faac faas faba fabi fabo fabs faca facc facs fafa fafc faff fafi fafo faio fair fais fara farb farc faro farr fars fasa fasc fasi faso fass fbar fbis fbrs fcab fcar fcas fcba fcbs fcca fccf fcic fcii fcra fcsc ffar ffcc ffff ffii ffrr ffsa ffss fiaa fiac fiaf fiar fias fiba fibs fica ficc fico fics fifa fifc fiff fifi fifo fiii fior fios fira firs fisa fisc fisi fiss foaf foar foba fobs foca foci foco focs fofo foia fois foof foos for- fora forb fori foro forr fors fosa fosb fosi foso foss frab frac fras frbc frcc frfc fria frib fric frio fris frob fros frsb frsc frso fsai fsas fscb fscc fsfi fsfo fsia fsra fssa fssc fssf iaaa iaac iaai iaas iaba iaca iacc iacr iacs iafc iaff iaia iais iara iarc iars iasa iasc iasi iaso iasr ibac ibar ibas ibca ibcs ibfi ibia ibis ibos ibra ibrc ibri ibro ibsa ibsf ibss icaa icab icac icaf icai icao icar icas icbc icbs icca iccb iccc iccf icci icco iccr iccs icfb icis icoc icor icos icra icrc icrf icrr icrs icsa icsb icsc icsi icsr icss ifaa ifac ifao ifar ifas ifbb ifco ific ifis ifor ifra ifrb ifrf ifri ifsa ifsb ifsc ifso iiac iias iica iifa iiii iiio iiis iioi iioo iios iira iirc iirs iisc iisi iisr ioba iobi ioci iofc ioii ioio ioof iooi iooo ioos iora iori iors ioso irac iraf irai irao irar iras irca ircc ircs iri- iria iric irio iris irob iroc irra irrc irri irrs irsa irsf is-a isac isaf isai isao isar isas isba isca iscc isci isco iscr iscs isfa isfc isia isic isis iso- isoc isof isor isos isra isri issa issc issf issi isso issr isss oafc oafo oafs oaic oais oara oars oasc oasi oass obai obas obba