a-a a-c a-t aaa aac aaf aao aar aas aat aau ac- aca acc acf aco acr acs act acu af- afa afc aff afo afr afs aft afu aoa aoc aof aoo aor aos aot aou ar- ara arc arf aro arr ars art aru as- asa asc asf aso asr ass ast asu at- ata atc atf ato atr ats att atu au- aua auc auf auo aur aus aut c-- caa cac caf cao car cas cat cau cca ccc ccf cco ccr ccs cct ccu cfa cfc cff cfo cfr cfs cft cfu co- coa coc cof coo cor cos cot cou cra crc crf cro crr crs crt cru csa csc csf cso csr css cst csu cta ctc ctf cto ctr cts ctt ctu cua cuc cuf cuo cur cus cut cuu faa fac faf fao far fas fat fau fca fcc fcf fco fcr fcs fct fcu ffa ffc fff ffo ffr ffs fft ffu foa foc fof foo for fos fot fou fra frc frf fro frr frs frt fru fsa fsc fsf fso fsr fss fst fsu fta ftc ftf fto ftr fts ftt ftu fua fuf fuo fur fus fut fuu oaa oac oaf oao oar oas oat oau oc- oca occ ocf oco ocr ocs oct ocu of- ofa ofc off ofo ofr ofs oft ofu oo- ooa ooc oof ooo oor oos oot or- ora orc orf oro orr ors ort oru os- osa osc osf oso osr oss ost osu ot- ota otc otf oto otr ots ott otu ou- oua ouc ouf ouo our ous out ra- raa rac raf rao rar ras rat rau rca rcc rcf rco rcr rcs rct rcu rfa rfc rff rfo rfr rfs rft rfu roa roc rof roo ror ros rot rou rra rrc rrf rrr rrs rrt rru rsa rsc rsf rso rsr rss rst rsu rta rtc rtf rto rtr rts rtt rtu rua ruc ruf ruo rur rus rut ruu saa sac saf sao sar sas sat sau sca scc scf sco scr scs sct scu sfa sfc sff sfo sfr sfs sft sfu soa soc sof soo sor sos sot sou sr- sra src srf sro srr srs srt ss- ssa ssc ssf sso ssr sss sst ssu sta stc stf sto str sts stt stu sua suc suf suo sur sus sut suu taa tac taf tao tar tas tat tau tca tcc tcf tco tcr tcs tct tcu tfa tfc tff tfo tfr tfs tft tfu to- toa toc tof too tor tos tot tou tra trc trf tro trr trs trt tru tsa tsc tsf tso tsr tss tst tsu tta ttc ttf tto ttr tts ttt ttu tua tuc tuf tuo tur tus tut tuu ua- uaa uac uaf uao uar uas uat uau uca ucc ucf uco ucr ucs uct ucu ufa ufc uff ufo ufr ufs uft ufu uoa uoc uoo uor uos uot ur- ura urc urf uro urr urs urt uru usa usc usf uso usr uss ust usu uta utc utf uto utr uts utt utu uua uuc uur uus uut uuu