a-a a-b a-c a-t aaa aab aac aao aas aat aau ab- aba abb abc abo abs abt abu ac- aca acb acc aco acs act acu aoa aob aoc aoo aos aot aou as- asa asb asc aso ass ast asu at- ata atb atc ato ats att atu au- aua aub auc auo aus aut b-u baa bab bac bao bas bat bau bba bbb bbc bbo bbs bbt bbu bca bcb bcc bco bcs bct bcu boa bob boc boo bos bot bou bsa bsb bsc bso bss bst bsu bta btb btc bto bts btt btu bua bub buc buo bus but buu c-- caa cab cac cao cas cat cau cba cbb cbc cbo cbs cbt cbu cca ccb ccc cco ccs cct ccu co- coa cob coc coo cos cot cou csa csb csc cso css cst csu cta ctb ctc cto cts ctt ctu cua cub cuc cuo cus cut cuu oaa oab oac oao oas oat oau ob- oba obb obc obo obs obt obu oc- oca ocb occ oco ocs oct ocu oo- ooa oob ooc ooo oos oot os- osa osb osc oso oss ost osu ot- ota otb otc oto ots ott otu ou- oua ouc ouo ous out saa sab sac sao sas sat sau sba sbb sbc sbo sbs sbt sbu sca scb scc sco scs sct scu soa sob soc soo sos sot sou ss- ssa ssb ssc sso sss sst ssu sta stb stc sto sts stt stu sua sub suc suo sus sut suu taa tab tac tao tas tat tau tba tbb tbc tbo tbs tbt tbu tca tcb tcc tco tcs tct tcu to- toa tob toc too tos tot tou tsa tsb tsc tso tss tst tsu tta ttb ttc tto tts ttt ttu tua tub tuc tuo tus tut tuu ua- uaa uab uac uao uas uat uau uba ubb ubc ubo ubs ubt ubu uca ucb ucc uco ucs uct ucu uoa uob uoc uoo uos uot usa usb usc uso uss ust usu uta utb utc uto uts utt utu uua uuc uus uut uuu

-ous aaaa aaab aaac aaas aaba aabb aabc aabt aaca aacb aacc aaco aacs aact aacu aaoo aasa aasc aass aast aasu aata aatc aatt aaus abaa abab abac abas abat abau abb- abba abbb abbo abbs abbt abca abcb abcc abcs abct aboa abob aboo abos abot abou abs- absa abss absu abta abts abtu abua abus abut ac-t acaa acab acac acas acat acba acca accc acco accs acct accu acoa acos acot acou acsa acsc acss acst acta actc acto acts actt actu acu- acuo acus acut aoba aoca aocs aoss aotc aous aout asaa asab asac asao asas asat asau asba asbo asbu asc- asca ascb ascc asco asct asob asoc asos asot asou assa assc asso asss asst assu asta astb astc asto asts asub asus at-t ataa atab atac atas atat atbs atca atcc atco atcs atob atoc atos atot atsb atsc atst atta atto atts attu atua atub atuc atus auaa auca auct ausa aust ausu aut- auto auts baaa baas baat baba babb babo babs babu bac- baca bacc baco bacs bact baos basa basc baso bass bast basu bata batc bato bats batt batu bau- bbas bbau bbbb bbbs bcaa bcas bcat bcbc bcbs bcca bccc bccs bcos bcsa bcsc bcss bctc bcts bcuc boab boac boas boat boba bobb bobo bobs bobu boca boco bocs bocu boob booc boos boot bosa bosc boso boss bost bosu bota botb boto bots bott boua bous bout bsaa bsac bsas bsat bscs bsos bssc bsts btaa btcc btcs btob btss bttb btus buat buba bubb bubo bubs bubu buca bucc buco bucs bucu busa busc buss bust busu but- buta buto buts butt buus c-bo caaa caab caac caas caat caba cabo cabs cabu cac- caca cacc caco caos casa casb casc caso cass cast casu cat- cata catb catc cato cats catt catu cauc cauo caus caut cbac cbat cbbc cbbs cbca cbcc cbcs cbct cbcu cbot cbsa cbsc cbta cbtc cbus ccaa ccab ccac ccas ccat ccba ccbc ccca cccb cccc cccs cccu ccob ccoc ccsa ccss ccst cctb cctc cctt ccuc ccus ccut coas coat coba cobb cobo cobs cobu coca coco coct cocu coob coos coot cosa cosc coso coss cost cota cotb cotc coto cots cott cotu coua coub cous cout csaa csab csac csao csas csat cscb cscc csco cscs csob csos csot cssa csta cstc csto csts csua csus ctab ctba ctbs ctca ctos ctot ctsa ctsc ctss ctsu ctta ctts cuau cub- cuba cubb cubs cuca cucc cusa cusb cuso cuss cust cusu cut- cuta cutc cuto cuts cutt oaau oasc oass oast oats obas obba obbo obos obot obss obst obts obus ocab ocac ocas ocat ocbc occa occc occt ocos ocsa oct- octa octo octs ooaa ooba oooo ooos oosa oost ootb oots oous osas osat osba osca oscc osco osoo osos ossa ossb osso ossu osta ostc osts otac otas otbs oto- otoo otos otsa otso otsu otta otto otts ottu otus ouac ouat oubs oucc ousa oust out- outa outb outo outs ouu- s-os sa-c saab saac saas saat saba sabb sabc sabo sabs sabu saca sacc saco sacs sact sacu saos saou sasa sasc saso sass sast sata satb satc sato sats satt satu saua sauc saus saut sbaa sbac sbas sbbs sbca sbcc sbcs sbct sbot sbsa sbst sbtc sbus scaa scab scac scas scat scba sccc sccs scct scob scoo scot scsa scsc scso scst scsu sctc scto scts scua scub scut soas soat soba sobo sobs sobt sobu soca soco socs soos soot sosa soso soss sost sota sotc soto sots sotu sous sout ssaa ssab ssac ssao ssas ssat ssau ssca sscc sscs ssoc ssot sssa sssb sssc ssss ssta sstb sstc ssts stab stac stas stat stau stbc stbs stca stcc stcs stcu stoa stob stoo stos stot