aaaa aaab aaac aaal aaas aaba aabb aabc aabl aabt aaca aacb aacc aacl aaco aacs aact aala aalc aall aalo aals aaoo aasa aasc aass aast aata aatc aatt abaa abab abac abal abas abat abb- abba abbb abbo abbs abbt abca abcb abcc abcl abcs abct abla ablo abls aboa abob abol aboo abos abot abs- absa absl abss abta abts ac-t acaa acab acac acas acat acba acbl acca accc acco accs acct acla aclc acls acoa acol acos acot acsa acsc acsl acss acst acta actc actl acto acts actt alaa alac alal alao alas alat alb- alba albc albo albs alca alcc alco alcs all- alla alll allo alls aloa aloc alol aloo alos alot alsa alsc also alst alta alto alts aoba aoca aocs aola aoss aotc asaa asab asac asal asao asas asat asba asbo asc- asca ascb ascc ascl asco asct asla aslo asob asoc asos asot assa assc assl asso asss asst asta astb astc astl asto asts at-l at-t ataa atab atac atal atas atat atbs atca atcc atcl atco atcs atla atlo atls atob atoc atol atos atot atsb atsc atst atta atto atts baaa baal baas baat baba babb babo babs bac- baca bacc baco bacs bact bala balc ball balo bals balt baol baos basa basc baso bass bast bata batc bato bats batt bbas bbbb bbbs bblb bbls bcaa bcas bcat bcbc bcbs bcca bccc bccl bccs bcos bcsa bcsc bcsl bcss bctc bcts blaa blab blac blas blat blbt blls blob bloc bloo blot blss blst blts boab boac boal boas boat boba bobb bobo bobs boca boco bocs bola boll bolo bols bolt boob booc bool boos boot bosa bosc boso boss bost bota botb boto bots bott bsaa bsac bsas bsat bscs bslc bsos bssc bsts btaa btcc btcl btcs btla btob btss bttb c-bo caaa caab caac caal caas caat caba cabo cabs cac- caca cacc caco cala calc call calo cals calt caol caos casa casb casc casl caso cass cast cat- cata catb catc cato cats catt cbac cbal cbat cbbc cbbs cbca cbcc cbcl cbcs cbct cblb cblc cbol cbot cbsa cbsc cbta cbtc cbtl ccaa ccab ccac ccas ccat ccba ccbc ccca cccb cccc cccl cccs ccla cclc ccls ccob ccoc ccsa ccsl ccss ccst cctb cctc cctl cctt clab clas clat clob cloo clos clot clsa clsc cltb cltc clts coal coas coat coba cobb cobo cobs coca coco coct col- cola colb coll colo cols colt coob cool coos coot cosa cosc cosl coso coss cost cota cotb cotc coto cots cott csaa csab csac csao csas csat cscb cscc cscl csco cscs csla csob csos csot cssa csta cstc csto csts ctab ctal ctba ctbs ctca ctls ctol ctos ctot ctsa ctsc ctss ctta ctts laaa laac laal laas laat laba labo labs laca lacc lacl laco lacs lact lala lall lalo laos lasa laso lass last lata latc lato lats latt lbcc lbos lbsc lcac lcat lcbc lcca lccc lccs lcls lcsc lctl lcto lcts llao llat llbs llcc llcs lllc llll lloa lloc lloo loac loas loat lob- loba lobb lobo lobs loca locc loco locs lola loll lolo lols loob looc lool loos loot losa losc loso loss lost lota lotl loto lots lott lsat lscb lsco lscs lsla lssa lsso lsts ltac ltbl ltcc ltcs ltsa lttc oall oasc oasl oass oast oats obal obas obba obbo obla obls obol obos obot obss obst obts ocab ocac ocal ocas ocat ocbc occa occc occt oclc ocos ocsa oct- octa octo octs olac olas olat olba olbo olca olcc olla ollo olos olot olst olta ooaa ooba oola oolo oooo ooos oosa oost ootb oots osas osat osba osca oscc oscl osco osla oslo osoo osos ossa ossb osso osta ostc osts otac otas otbs otcl oto- otoo otos otsa otso otta otto otts s-os sa-c saab saac saal saas saat saba sabb sabc sabo sabs saca sacc saco sacs sact sala salc sall salo sals salt saol saos sasa sasc sasl saso sass sast sata satb satc satl sato sats satt sbaa sbac sbas sbbs sbca sbcc sbcs sbct sbot sbsa sbst sbtc scaa scab scac scal scas scat scba sccc sccl sccs scct scl- sclc scls scob scol scoo scot scsa scsc scsl scso scst sctc sctl scto scts slaa slab slac slas slat slcc slob sloc sloo slos slot slsa slsc slst slts soal soas soat soba sobo sobs sobt soca socl soco socs sola soll solo sols solt sool soos soot sosa soso soss sost sota sotc sotl soto sots ssaa ssab ssac ssao ssas ssat ssca sscc sscs ssla sslc sslt ssoc ssot sssa sssb sssc ssss ssta sstb sstc sstl ssts stab stac stal stas stat stbc stbs stca stcc stcs stlc stlo stlt stoa stob stol stoo stos stot stss sttc taa- taal taas taat taba tabb tabc tabl tabo tabs taca tacc tacl taco tacs tact tala talc tall talo tals taoa taos tasa tasb tasc tass tast tata tatb tato tats tatt tbas tbbs tbca tbcb tbcc tbst tbta tcbs tcca tccc tcos tctc tcts tlac tlco tlos toab toal toas toat toba tobo tobs tobt toca toco tol- tola toll tolo tolt tooa tool toos toot tosa tosb tosc toso toss tost tota totc toto tots tott tsaa tsal tsao tsat tsbc tsca tscc tsob tsol tsos tssa tsst tstc tsts ttab ttbb ttss tttt