-er a-a a-c a-t aaa aac aad aae aak aan aar aat aau ac- aca acc acd ace ack acn acr act acu ad- ada adc add ade adk adn adr adt adu aea aec aed aee aek aen aer aet aeu aka akc akd ake akk akn akr aku an- ana anc and ane ank ann anr ant anu ar- ara arc ard are ark arn arr art aru at- ata atc atd ate atn atr att atu au- aua auc aud aue auk aun aur aut c-- caa cac cad cae cak can car cat cau cca ccc ccd cce cck ccn ccr cct ccu cda cdc cdd cde cdk cdn cdr cdt cdu ce- cea cec ced cee cek cen cer cet ceu cka ckc ckd ckt cn- cna cnc cnd cne cnn cnr cnt cnu cra crc crd cre crk crn crr crt cru cta ctc ctd cte ctk ctn ctr ctt ctu cua cuc cud cue cuk cun cur cut cuu daa dac dad dae dak dan dar dat dau dca dcc dcd dce dck dcn dcr dct dcu dda ddc ddd dde ddk ddn ddr ddt ddu de- dea dec ded dee dek den der det deu dka dkc dke dkk dkr dkt dku dna dnc dnd dne dnk dnn dnr dnt dra drc drd dre drk drn drr drt dru dta dtc dtd dte dtk dtn dtr dtt dtu dua duc dud due duk dun dur dut eaa eac ead eae eak ean ear eat eau ec- eca ecc ecd ece eck ecn ecr ect ecu ed- eda edc edd ede edk edn edr edt edu eea eec eed eee eek een eer eet eka ekc ekd eke ekr ekt eku en- ena enc end ene enk enn enr ent enu era erc erd ere erk ern err ert eru eta etc etd ete etk etn etr ett etu eu- eua euc eud eue eun eur eut k-t ka- kaa kac kad kae kak kan kar kat kau kca kcc kcd kce kck kcn kcr kct kcu kda kdc kde kdk kdr kdt kdu ke- kea kec ked kee kek ken ker ket kkc kke kkk kkn kkr kkt kku kn- kna knc knd kne knk knn knr knt knu kra krc krd krk krn krr krt kru kta ktc kte ktk ktn ktr ktt ktu kuc kud kue kuk kun kur kut kuu naa nac nad nae nak nan nar nat nau nca ncc ncd nce nck ncn ncr nct ncu nda ndc ndd nde ndk ndn ndr ndt ndu ne- nea nec ned nee nek nen ner net neu nka nkc nke nkk nkn nkr nkt nku nna nnc nne nnk nnn nnt nnu nra nrc nrd nre nrk nrn nrr nrt nru nta ntc ntd nte ntk ntn ntr ntt ntu nua nuc nud nue nuk nun nur nut nuu ra- raa rac rad rae rak ran rar rat rau rca rcc rcd rce rcn rcr rct rcu rda rdc rdd rde rdn rdr rdt rdu re- rea rec red ree rek ren rer ret reu rkc rke rkk rkt rku rna rnc rnd rnn rnr rnt rnu rra rrc rrd rrk rrn rrr rrt rru rta rtc rtd rte rtk rtn rtr rtt rtu rua ruc rud rue ruk run rur rut ruu taa tac tad tae tak tan tar tat tau tca tcc tcd tce tck tcn tcr tct tcu tda tdc tdd tde tdk tdn tdr tdt tdu te- tea tec ted tee tek ten ter tet teu tka tkc tke tkk tkr tkt tna tnc tnd tne tnk tnn tnr tnt tra trc trd tre trk trn trr trt tru tta ttc ttd tte ttk ttn ttr ttt ttu tua tuc tud tue tuk tun tur tut tuu ua- uaa uac uad uae uak uan uar uat uau uca ucc ucd uce uck ucn ucr uct ucu uda udc udd ude udk udn udr udt udu uea uec ued uee uen uer uet uka ukc uke ukk ukn ukr uku un- una unc und une unk unn unr unt unu ur- ura urc urd ure urk urn urr urt uru uta utc utd ute utk utn utr utt utu uua uuc uue uun uur uut uuu