a-a a-c a-t aaa aac aaf aak aao aar aas aat aau ac- aca acc acf ack aco acr acs act acu af- afa afc aff afk afo afr afs aft afu aka akc akk ako akr aks aku aoa aoc aof aok aoo aor aos aot aou ar- ara arc arf ark aro arr ars art aru as- asa asc asf ask aso asr ass ast asu at- ata atc atf ato atr ats att atu au- aua auc auf auk auo aur aus aut c-- caa cac caf cak cao car cas cat cau cca ccc ccf cck cco ccr ccs cct ccu cfa cfc cff cfk cfo cfr cfs cft cfu cka ckc cko cks ckt co- coa coc cof cok coo cor cos cot cou cra crc crf crk cro crr crs crt cru csa csc csf csk cso csr css cst csu cta ctc ctf ctk cto ctr cts ctt ctu cua cuc cuf cuk cuo cur cus cut cuu faa fac faf fak fao far fas fat fau fca fcc fcf fck fco fcr fcs fct fcu ffa ffc fff ffk ffo ffr ffs fft ffu fka fkc fkf fkk fkt foa foc fof fok foo for fos fot fou fra frc frf frk fro frr frs frt fru fsa fsc fsf fsk fso fsr fss fst fsu fta ftc ftf ftk fto ftr fts ftt ftu fua fuf fuk fuo fur fus fut fuu k-t ka- kaa kac kaf kak kao kar kas kat kau kca kcc kck kcr kcs kct kcu kfa kfc kff kfo kfs kfu kkc kkk kkr kks kkt kku koa koc kof kok koo kor kos kot kou kra krc krf krk kro krr krs krt kru ksa ksc ksf ksk kso ksr kss kst ksu kta ktc ktf ktk kto ktr kts ktt ktu kuc kuk kur kus kut kuu oaa oac oaf oak oao oar oas oat oau oc- oca occ ocf ock oco ocr ocs oct ocu of- ofa ofc off ofo ofr ofs oft ofu oka okc okk oko okr oks oku oo- ooa ooc oof ook ooo oor oos oot or- ora orc orf ork oro orr ors ort oru os- osa osc osf osk oso osr oss ost osu ot- ota otc otf otk oto otr ots ott otu ou- oua ouc ouf ouk ouo our ous out ra- raa rac raf rak rao rar ras rat rau rca rcc rcf rco rcr rcs rct rcu rfa rfc rff rfk rfo rfr rfs rft rfu rkc rkf rkk rko rks rkt rku roa roc rof rok roo ror ros rot rou rra rrc rrf rrk rrr rrs rrt rru rsa rsc rsf rsk rso rsr rss rst rsu rta rtc rtf rtk rto rtr rts rtt rtu rua ruc ruf ruk ruo rur rus rut ruu saa sac saf sak sao sar sas sat sau sca scc scf sck sco scr scs sct scu sfa sfc sff sfk sfo sfr sfs sft sfu sk- ska skc skf skk sko skr sks skt sku soa soc sof sok soo sor sos sot sou sr- sra src srf srk sro srr srs srt ss- ssa ssc ssf ssk sso ssr sss sst ssu sta stc stf stk sto str sts stt stu sua suc suf suk suo sur sus sut suu taa tac taf tak tao tar tas tat tau tca tcc tcf tck tco tcr tcs tct tcu tfa tfc tff tfk tfo tfr tfs tft tfu tka tkc tkk tko tkr tks tkt to- toa toc tof tok too tor tos tot tou tra trc trf trk tro trr trs trt tru tsa tsc tsf tsk tso tsr tss tst tsu tta ttc ttf ttk tto ttr tts ttt ttu tua tuc tuf tuk tuo tur tus tut tuu ua- uaa uac uaf uak uao uar uas uat uau uca ucc ucf uck uco ucr ucs uct ucu ufa ufc uff ufo ufr ufs uft ufu uka ukc ukf ukk ukr uku uoa uoc uok uoo uor uos uot ur- ura urc urf urk uro urr urs urt uru usa usc usf usk uso usr uss ust usu uta utc utf utk uto utr uts utt utu uua uuc uur uus uut uuu