-er -ic a-a a-b a-c a-i a-t aaa aab aac aae aai aan aar aat aau ab- aba abb abc abe abi abn abr abt abu ac- aca acb acc ace aci acn acr act acu aea aeb aec aee aei aen aer aet aeu ai- aia aib aic aie aii ain air ait aiu an- ana anb anc ane ani ann anr ant anu ar- ara arb arc are ari arn arr art aru at- ata atb atc ate ati atn atr att atu au- aua aub auc aue aui aun aur aut b-u baa bab bac bae bai ban bar bat bau bba bbb bbc bbe bbi bbn bbr bbt bbu bca bcb bcc bce bci bcn bcr bct bcu be- bea beb bec bee bei ben ber bet beu bi- bia bib bic bie bii bin bir bit biu bna bnb bnc bne bni bnn bnr bnt bnu bra brb bre bri brn brr brt bru bta btb btc bte bti btn btr btt btu bua bub buc bue bui bun bur but buu c-- caa cab cac cae cai can car cat cau cba cbb cbc cbe cbi cbn cbr cbt cbu cca ccb ccc cce cci ccn ccr cct ccu ce- cea ceb cec cee cei cen cer cet ceu ci- cia cib cic cie cii cin cir cit ciu cn- cna cnb cnc cne cni cnn cnr cnt cnu cra crb crc cre cri crn crr crt cru cta ctb ctc cte cti ctn ctr ctt ctu cua cub cuc cue cui cun cur cut cuu eaa eab eac eae eai ean ear eat eau eba ebb ebc ebe ebi ebn ebr ebt ebu ec- eca ecb ecc ece eci ecn ecr ect ecu eea eeb eec eee een eer eet eia eib eic eie eii ein eir eit eiu en- ena enb enc ene eni enn enr ent enu era erb erc ere eri ern err ert eru eta etb etc ete eti etn etr ett etu eu- eua eub euc eue eui eun eur eut ia- iaa iab iac iae iai ian iar iat iau iba ibb ibc ibe ibi ibn ibr ibt ibu ica icb icc ice ici icn icr ict icu ie- iea iec iee iei ien ier iet iia iib iic iie iii iin iir iit iiu in- ina inb inc ine ini inn inr int inu ir- ira irb irc ire iri irn irr irt iru ita itb itc ite iti itn itt itu iu- iua iub iuc iue iui iur iut n-i naa nab nac nae nai nan nar nat nau nba nbb nbc nbe nbi nbn nbr nbt nbu nca ncb ncc nce nci ncn ncr nct ncu ne- nea neb nec nee nei nen ner net neu nia nib nic nie nii nin nir nit niu nna nnb nnc nne nni nnn nnt nnu nra nrb nrc nre nri nrn nrr nrt nru nta ntb ntc nte nti ntn ntr ntt ntu nua nub nuc nue nui nun nur nut nuu ra- raa rab rac rae rai ran rar rat rau rba rbb rbc rbe rbi rbn rbr rbt rbu rca rcb rcc rce rci rcn rcr rct rcu re- rea reb rec ree rei ren rer ret reu ria rib ric rie rii rin rir rit rna rnb rnc rni rnn rnr rnt rnu rra rrb rrc rri rrn rrr rrt rru rta rtb rtc rte rti rtn rtr rtt rtu rua rub ruc rue rui run rur rut ruu taa tab tac tae tai tan tar tat tau tba tbb tbc tbe tbi tbn tbr tbt tbu tca tcb tcc tce tci tcn tcr tct tcu te- tea teb tec tee tei ten ter tet teu tia tib tic tie tii tin tir tit tiu tna tnb tnc tne tni tnn tnr tnt tra trb trc tre tri trn trr trt tru tta ttb ttc tte tti ttn ttr ttt ttu tua tub tuc tue tui tun tur tut tuu ua- uaa uab uac uae uai uan uar uat uau uba ubb ubc ube ubi ubn ubr ubt ubu uca ucb ucc uce uci ucn ucr uct ucu uea ueb uec uee uei uen uer uet uia uib uic uie uii uin uir uit uiu un- una unb unc une uni unn unr unt unu ur- ura urb urc ure uri urn urr urt uru uta utb utc ute uti utn utr utt utu uua uuc uue uun uur uut uuu