-er -ic a-a a-b a-c a-i a-t aaa aab aac aae aai aan aar aas aat aau aax ab- aba abb abc abe abi abn abr abs abt abu abx ac- aca acb acc ace aci acn acr acs act acu acx aea aeb aec aee aei aen aer aes aet aeu aex ai- aia aib aic aie aii ain air ais ait aiu aix an- ana anb anc ane ani ann anr ans ant anu anx ar- ara arb arc are ari arn arr ars art aru arx as- asa asb asc ase asi asn asr ass ast asu asx at- ata atb atc ate ati atn atr ats att atu atx au- aua aub auc aue aui aun aur aus aut aux ax- axa axe axi axn axr axs axt axx b-u baa bab bac bae bai ban bar bas bat bau bax bba bbb bbc bbe bbi bbn bbr bbs bbt bbu bbx bca bcb bcc bce bci bcn bcr bcs bct bcu bcx be- bea beb bec bee bei ben ber bes bet beu bex bi- bia bib bic bie bii bin bir bis bit biu bix bna bnb bnc bne bni bnn bnr bns bnt bnu bnx bra brb bre bri brn brr brs brt bru brx bsa bsb bsc bse bsi bsn bsr bss bst bsu bsx bta btb btc bte bti btn btr bts btt btu btx bua bub buc bue bui bun bur bus but buu bux bxb bxi bxn bxx c-- caa cab cac cae cai can car cas cat cau cax cba cbb cbc cbe cbi cbn cbr cbs cbt cbu cbx cca ccb ccc cce cci ccn ccr ccs cct ccu ccx ce- cea ceb cec cee cei cen cer ces cet ceu cex ci- cia cib cic cie cii cin cir cis cit ciu cix cn- cna cnb cnc cne cni cnn cnr cns cnt cnu cnx cra crb crc cre cri crn crr crs crt cru crx csa csb csc cse csi csn csr css cst csu csx cta ctb ctc cte cti ctn ctr cts ctt ctu ctx cua cub cuc cue cui cun cur cus cut cuu cxc cxi cxr cxs cxt cxx eaa eab eac eae eai ean ear eas eat eau eax eba ebb ebc ebe ebi ebn ebr ebs ebt ebu ebx ec- eca ecb ecc ece eci ecn ecr ecs ect ecu ecx eea eeb eec eee een eer ees eet eex eia eib eic eie eii ein eir eis eit eiu eix en- ena enb enc ene eni enn enr ens ent enu era erb erc ere eri ern err ers ert eru es- esa esb esc ese esi esn esr ess est esu esx eta etb etc ete eti etn etr ets ett etu etx eu- eua eub euc eue eui eun eur eus eut eux ex- exa exc exe exi exr exs ext exu exx ia- iaa iab iac iae iai ian iar ias iat iau iba ibb ibc ibe ibi ibn ibr ibs ibt ibu ibx ica icb icc ice ici icn icr ics ict icu ie- iea iec iee iei ien ier ies iet iex iia iib iic iie iii iin iir iis iit iiu iix in- ina inb inc ine ini inn inr ins int inu inx ir- ira irb irc ire iri irn irr irs irt iru irx is- isa isb isc ise isi isn isr iss ist isu ita itb itc ite iti itn its itt itu itx iu- iua iub iuc iue iui iur ius iut ixc ixe ixi ixn n-i naa nab nac nae nai nan nar nas nat nau nax nba nbb nbc nbe nbi nbn nbr nbs nbt nbu nbx nca ncb ncc nce nci ncn ncr ncs nct ncu ncx ne- nea neb nec nee nei nen ner nes net neu nex nia nib nic nie nii nin nir nis nit niu nix nna nnb nnc nne nni nnn nns nnt nnu nra nrb nrc nre nri nrn nrr nrs nrt nru nrx nsa nsb nsc nse nsi nsn nsr nss nst nsu nsx nta ntb ntc nte nti ntn ntr nts ntt ntu ntx nua nub nuc nue nui nun nur nus nut nuu nux nxc nxt ra- raa rab rac rae rai ran rar ras rat rau rax rba rbb rbc rbe rbi rbn rbr rbs rbt rbu rbx rca rcb rcc rce rci rcn rcr rcs rct rcu rcx re- rea reb rec ree rei ren rer res ret reu rex ria rib ric rie rii rin rir ris rit rix rna rnb rnc rni rnn rnr rns rnt rnu rra rrb rrc rri rrn rrr rrs rrt rru rsa rsb rsc rse rsi rsn rsr rss rst rsu rsx rta rtb rtc rte rti rtn rtr rts rtt rtu rtx rua rub ruc rue rui run rur rus rut ruu rux rxr rxs saa sab sac sae sai san sar sas sat sau sax sba sbb sbc sbe sbi sbn sbr sbs sbt sbu sbx sca scb scc sce sci scn scr scs sct scu scx se- sea seb sec see sei sen ser ses set seu sex sia sib sic sie sii sin sir sis sit siu six sna snb snc sne sni snn snr sns snt snu sr- sra srb src sre sri srn srr srs srt srx ss- ssa ssb ssc sse ssi ssn ssr sss sst ssu ssx sta stb stc ste sti stn str sts stt stu stx sua sub suc sue sui sun sur sus sut suu sux sxc sxi sxn sxs sxt sxu t-x taa tab tac tae tai tan tar tas tat tau tax tba tbb tbc tbe tbi tbn tbr tbs tbt tbu tca tcb tcc tce tci tcn tcr tcs tct tcu tcx te- tea teb tec tee tei ten ter tes tet teu tex tia tib tic tie tii tin tir tis tit tiu tix tna tnb tnc tne tni tnn tnr tns