-ana aaaa aaab aaac aaan aaas aaba aabb aabc aabt aaca aacb aacc aacn aaco aacs aact aana aaon aaoo aasa aasc aass aast aata aatc aatt abaa abab abac aban abas abat abb- abba abbb abbo abbs abbt abca abcb abcc abcn abcs abct aboa abob abon aboo abos abot abs- absa abss abta abts ac-t acaa acab acac acan acas acat acba acca accc acco accs acct acoa acon acos acot acsa acsc acss acst acta actc acto acts actt ana- anaa anab anac anan anao anas anat anba anbb anbo anca ancc anco anct anna annb anno anns annt ano- anoa anon anos ansa anso ant- anta anto ants antt aoba aoca aocs aonb aono aont aoss aotc asaa asab asac asan asao asas asat asba asbo asc- asca ascb ascc asco asct asnc asno asob asoc ason asos asot assa assc assn asso asss asst asta astb astc asto asts at-t ataa atab atac atan atas atat atbs atca atcc atco atcs atna atno atns atob atoc aton atos atot atsb atsc atst atta attn atto atts baaa baan baas baat baba babb babo babs bac- baca bacc bacn baco bacs bact bana banc bann bano bans bant baon baos basa basc baso bass bast bata batc batn bato bats batt bbas bbbb bbbs bcaa bcas bcat bcbc bcbs bcca bccc bccs bcos bcsa bcsc bcsn bcss bctc bcts bnas bnoc bnss bnta boab boac boan boas boat boba bobb bobo bobs boca boco bocs bona bonc bonn bono bons bont boob booc boon boos boot bosa bosc bosn boso boss bost bota botb botn boto bots bott bsaa bsac bsas bsat bscs bsns bson bsos bssc bsts btaa btan btcc btcs btob btss bttb c-bo caaa caab caac caan caas caat caba cabo cabs cac- caca cacc caco cana canc cann cano cans cant caos casa casb casc caso cass cast cat- cata catb catc cato cats catt cbac cbat cbbc cbbs cbca cbcc cbcn cbcs cbct cbna cbot cbsa cbsc cbsn cbta cbtc ccaa ccab ccac ccas ccat ccba ccbc ccbn ccca cccb cccc cccs ccna ccnb ccnc ccns ccob ccoc ccsa ccsn ccss ccst cctb cctc cctt cnaa cnac cnas cnbc cnco cnna cnsa cnss cnta cntc coan coas coat coba cobb cobo cobs coca coco coct con- cona conc conn cono cons cont coob coon coos coot cosa cosc coso coss cost cota cotb cotc cotn coto cots cott csaa csab csac csao csas csat cscb cscc csco cscs csob csos csot cssa csta cstc csto csts ctab ctan ctba ctbs ctca ctns ctos ctot ctsa ctsc ctsn ctss ctta cttn ctts naaa naab naac naan naas naat naba nabc nabo nabs naca nacc naco nacs nan- nana nanb nann nano nans nant naoc naos naot nas- nasa nasb nasc naso nass nast nata natc nato nats natt nbaa nbas nbbc nbbo nbca nbcc nbco nbcs ncaa ncac ncat ncba ncbc ncbs ncca nccc nccn nccs ncct ncna ncnc ncoa ncoc ncos ncsa ncsc ncss ncst ncta nctc nnnn nnos nnot nnsa nnss nntn noaa noac noat noba nobc nobo nobs noco nocs noct non- nona nonn nono nons nont noo- noob noon nooo noos noot nos- nosa noss nost not- nota noto nots nott nsaa nsac nsbo nsca nscc nscs nsna nsos nssa nssb nssc nsso nsss nstc nsts ntbc ntcc ntsb ntsc ntss ntto oasc oass oast oats oban obas obba obbo obon obos obot obsn obss obst obts ocab ocac ocan ocas ocat ocbc occa occc occn occt ocna ocon ocos ocsa oct- octa octo octs onab onan onas onat onc- onca onco onct onna onno onon onos onsc onso onst ont- ontc onto ooaa ooba oona oons oont oooo ooos oosa oost ootb oots osan osas osat osba osca oscc osco osno osoo osos ossa ossb osso osta ostc osts otac otan otas otbs oto- oton otoo otos otsa otso otta otto otts s-os sa-c saab saac saan saas saat saba sabb sabc sabo sabs saca sacc sacn saco sacs sact sana sann sano sans sant saon saos sasa sasc saso sass sast sata satb satc satn sato sats satt sbaa sbac sbas sbbs sbca sbcc sbcs sbct sbot sbsa sbst sbtc sbtn scaa scab scac scan scas scat scba sccc sccs scct scna scnt scob scon scoo scot scsa scsc scsn scso scst sctc sctn scto scts snab snas snat snba snca sncc snco snns snoa snob snoc snoo snos snot soan soas soat soba sobo sobs sobt soca soco socs son- sona sono sons sont soon soos soot sosa soso soss sost sota sotc sotn soto sots ssaa ssab ssac ssan ssao ssas ssat ssbn ssca sscc sscs ssns ssoc ssot sssa sssb sssc ssss ssta sstb sstc ssts stab stac stan stas stat stbc stbs stca stcc stcs stnn stns stoa stob ston stoo stos stot stss sttc taa- taan taas taat taba tabb tabc tabo tabs taca tacc taco tacs tact tana tann tano tans tant taoa taos tasa tasb tasc tass tast tata tatb tato tats tatt tbas tbbs tbca tbcb tbcc tbst tbta tcbs tcca tccc tcnn tcon tcos tctc tcts tnbc tnca tncc tnts toab toan toas toat toba tobo tobs tobt toca toco tona tonb tonn tono tons tooa toon toos toot tosa tosb tosc toso toss tost tota totc toto tots tott tsaa tsao tsat tsbc tsca tscc tsna tsob tsos tssa tsst tstc tsts ttab ttbb ttcn tton ttss tttt