a-a a-c a-t aaa aac aad aaf aak aao aar aat aau ac- aca acc acd acf ack aco acr act acu ad- ada adc add adf adk ado adr adt adu af- afa afc afd aff afk afo afr aft afu aka akc akd akk ako akr aku aoa aoc aod aof aok aoo aor aot aou ar- ara arc ard arf ark aro arr art aru at- ata atc atd atf ato atr att atu au- aua auc aud auf auk auo aur aut c-- caa cac cad caf cak cao car cat cau cca ccc ccd ccf cck cco ccr cct ccu cda cdc cdd cdf cdk cdo cdr cdt cdu cfa cfc cfd cff cfk cfo cfr cft cfu cka ckc ckd cko ckt co- coa coc cod cof cok coo cor cot cou cra crc crd crf crk cro crr crt cru cta ctc ctd ctf ctk cto ctr ctt ctu cua cuc cud cuf cuk cuo cur cut cuu daa dac dad daf dak dao dar dat dau dca dcc dcd dcf dck dco dcr dct dcu dda ddc ddd ddf ddk ddo ddr ddt ddu dfa dfc dfd dff dfk dfo dfr dft dfu dka dkc dkk dko dkr dkt dku doa doc dod dof dok doo dor dot dou dra drc drd drk dro drr drt dru dta dtc dtd dtf dtk dto dtr dtt dtu dua duc dud duf duk duo dur dut faa fac fad faf fak fao far fat fau fca fcc fcd fcf fck fco fcr fct fcu fda fdc fdd fdf fdk fdo fdr fdt fdu ffa ffc ffd fff ffk ffo ffr fft ffu fka fkc fkf fkk fkt foa foc fof fok foo for fot fou fra frc frd frf frk fro frr frt fru fta ftc ftd ftf ftk fto ftr ftt ftu fua fud fuf fuk fuo fur fut fuu k-t ka- kaa kac kad kaf kak kao kar kat kau kca kcc kcd kck kcr kct kcu kda kdc kdf kdk kdo kdr kdt kdu kfa kfc kfd kff kfo kfu kkc kkk kkr kkt kku koa koc kod kof kok koo kor kot kou kra krc krd krf krk kro krr krt kru kta ktc ktf ktk kto ktr ktt ktu kuc kud kuk kur kut kuu oaa oac oad oaf oak oao oar oat oau oc- oca occ ocd ocf ock oco ocr oct ocu oda odc odd odf odo odr odt odu of- ofa ofc ofd off ofo ofr oft ofu oka okc okd okk oko okr oku oo- ooa ooc ood oof ook ooo oor oot or- ora orc ord orf ork oro orr ort oru ot- ota otc otd otf otk oto otr ott otu ou- oua ouc oud ouf ouk ouo our out ra- raa rac rad raf rak rao rar rat rau rca rcc rcd rcf rco rcr rct rcu rda rdc rdd rdf rdo rdr rdt rdu rfa rfc rfd rff rfk rfo rfr rft rfu rkc rkf rkk rko rkt rku roa roc rod rof rok roo ror rot rou rra rrc rrd rrf rrk rrr rrt rru rta rtc rtd rtf rtk rto rtr rtt rtu rua ruc rud ruf ruk ruo rur rut ruu taa tac tad taf tak tao tar tat tau tca tcc tcd tcf tck tco tcr tct tcu tda tdc tdd tdf tdk tdo tdr tdt tdu tfa tfc tfd tff tfk tfo tfr tft tfu tka tkc tkk tko tkr tkt to- toa toc tod tof tok too tor tot tou tra trc trd trf trk tro trr trt tru tta ttc ttd ttf ttk tto ttr ttt ttu tua tuc tud tuf tuk tuo tur tut tuu ua- uaa uac uad uaf uak uao uar uat uau uca ucc ucd ucf uck uco ucr uct ucu uda udc udd udf udk udo udr udt udu ufa ufc ufd uff ufo ufr uft ufu uka ukc ukf ukk ukr uku uoa uoc uod uok uoo uor uot ur- ura urc urd urf urk uro urr urt uru uta utc utd utf utk uto utr utt utu uua uuc uur uut uuu