-er -ic a-a a-b a-c a-i aaa aab aac aad aae aai aan aar aas aau ab- aba abb abc abd abe abi abn abr abs abu ac- aca acb acc acd ace aci acn acr acs acu ad- ada adb adc add ade adi adn adr ads adu aea aeb aec aed aee aei aen aer aes aeu ai- aia aib aic aid aie aii ain air ais aiu an- ana anb anc and ane ani ann anr ans anu ar- ara arb arc ard are ari arn arr ars aru as- asa asb asc asd ase asi asn asr ass asu au- aua aub auc aud aue aui aun aur aus b-u baa bab bac bad bae bai ban bar bas bau bba bbb bbc bbd bbe bbi bbn bbr bbs bbu bca bcb bcc bcd bce bci bcn bcr bcs bcu bda bdb bdc bdd bde bdi bdr bds bdu be- bea beb bec bed bee bei ben ber bes beu bi- bia bib bic bid bie bii bin bir bis biu bna bnb bnc bnd bne bni bnn bnr bns bnu bra brb brd bre bri brn brr brs bru bsa bsb bsc bsd bse bsi bsn bsr bss bsu bua bub buc bud bue bui bun bur bus buu c-- caa cab cac cad cae cai can car cas cau cba cbb cbc cbd cbe cbi cbn cbr cbs cbu cca ccb ccc ccd cce cci ccn ccr ccs ccu cda cdb cdc cdd cde cdi cdn cdr cds cdu ce- cea ceb cec ced cee cei cen cer ces ceu ci- cia cib cic cid cie cii cin cir cis ciu cn- cna cnb cnc cnd cne cni cnn cnr cns cnu cra crb crc crd cre cri crn crr crs cru csa csb csc csd cse csi csn csr css csu cua cub cuc cud cue cui cun cur cus cuu daa dab dac dad dae dai dan dar das dau dba dbb dbc dbd dbe dbi dbn dbr dbs dbu dca dcb dcc dcd dce dci dcn dcr dcs dcu dda ddb ddc ddd dde ddi ddn ddr dds ddu de- dea deb dec ded dee dei den der des deu di- dia dib dic did die dii din dir dis diu dna dnb dnc dnd dne dni dnn dnr dns dra drb drc drd dre dri drn drr drs dru dsa dsb dsc dsd dse dsi dsn dsr dss dsu dua dub duc dud due dui dun dur dus eaa eab eac ead eae eai ean ear eas eau eba ebb ebc ebd ebe ebi ebn ebr ebs ebu ec- eca ecb ecc ecd ece eci ecn ecr ecs ecu ed- eda edb edc edd ede edi edn edr eds edu eea eeb eec eed eee een eer ees eia eib eic eid eie eii ein eir eis eiu en- ena enb enc end ene eni enn enr ens enu era erb erc erd ere eri ern err ers eru es- esa esb esc esd ese esi esn esr ess esu eu- eua eub euc eud eue eui eun eur eus i-d ia- iaa iab iac iad iae iai ian iar ias iau iba ibb ibc ibd ibe ibi ibn ibr ibs ibu ica icb icc icd ice ici icn icr ics icu ida idb idc idd ide idi idn idr ids idu ie- iea iec ied iee iei ien ier ies iia iib iic iid iie iii iin iir iis iiu in- ina inb inc ind ine ini inn inr ins inu ir- ira irb irc ird ire iri irn irr irs iru is- isa isb isc isd ise isi isn isr iss isu iu- iua iub iuc iud iue iui iur ius n-i naa nab nac nad nae nai nan nar nas nau nba nbb nbc nbd nbe nbi nbn nbr nbs nbu nca ncb ncc ncd nce nci ncn ncr ncs ncu nda ndb ndc ndd nde ndi ndn ndr nds ndu ne- nea neb nec ned nee nei nen ner nes neu nia nib nic nid nie nii nin nir nis niu nna nnb nnc nne nni nnn nns nnu nra nrb nrc nrd nre nri nrn nrr nrs nru nsa nsb nsc nsd nse nsi nsn nsr nss nsu nua nub nuc nud nue nui nun nur nus nuu ra- raa rab rac rad rae rai ran rar ras rau rba rbb rbc rbd rbe rbi rbn rbr rbs rbu rca rcb rcc rcd rce rci rcn rcr rcs rcu rda rdb rdc rdd rde rdi rdn rdr rds rdu re- rea reb rec red ree rei ren rer res reu ria rib ric rid rie rii rin rir ris rna rnb rnc rnd rni rnn rnr rns rnu rra rrb rrc rrd rri rrn rrr rrs rru rsa rsb rsc rsd rse rsi rsn rsr rss rsu rua rub ruc rud rue rui run rur rus ruu saa sab sac sad sae sai san sar sas sau sba sbb sbc sbd sbe sbi sbn sbr sbs sbu sca scb scc scd sce sci scn scr scs scu sda sdb sdc sdd sde sdi sdn sdr sds sdu se- sea seb sec sed see sei sen ser ses seu sia sib sic sid sie sii sin sir sis siu sna snb snc snd sne sni snn snr sns snu sr- sra srb src srd sre sri srn srr srs ss- ssa ssb ssc ssd sse ssi ssn ssr sss ssu sua sub suc sud sue sui sun sur sus suu ua- uaa uab uac uad uae uai uan uar uas uau uba ubb ubc ube ubi ubn ubr ubs ubu uca ucb ucc ucd uce uci ucn ucr ucs ucu uda udb udc udd ude udi udn udr uds udu uea ueb uec ued uee uei uen uer ues uia uib uic uid uie uii uin uir uis uiu un- una unb unc und une uni unn unr uns unu ur- ura urb urc urd ure