-er a-a a-b a-c aaa aab aac aad aae aah aan aap aar aas ab- aba abb abc abd abe abh abn abp abr abs ac- aca acb acc acd ace ach acn acp acr acs ad- ada adb adc add ade adh adn adp adr ads aea aeb aec aed aee aeh aen aep aer aes aha ahb ahc ahd ahe ahh ahn ahp ahr ahs an- ana anb anc and ane anh ann anp anr ans ap- apa apb apc apd ape aph apn app apr aps ar- ara arb arc ard are arh arn arp arr ars as- asa asb asc asd ase ash asn asp asr ass b-p baa bab bac bad bae bah ban bap bar bas bba bbb bbc bbd bbe bbh bbn bbp bbr bbs bca bcb bcc bcd bce bch bcn bcp bcr bcs bda bdb bdc bdd bde bdh bdp bdr bds be- bea beb bec bed bee beh ben bep ber bes bha bhb bhc bhd bhe bhh bhp bhr bhs bna bnb bnc bnd bne bnn bnp bnr bns bpa bpb bpc bpd bpe bph bpn bpp bpr bps bra brb brd bre brh brn brp brr brs bsa bsb bsc bsd bse bsh bsn bsp bsr bss c-- caa cab cac cad cae cah can cap car cas cba cbb cbc cbd cbe cbh cbn cbp cbr cbs cca ccb ccc ccd cce cch ccn ccp ccr ccs cda cdb cdc cdd cde cdh cdn cdp cdr cds ce- cea ceb cec ced cee ceh cen cep cer ces ch- cha chb chc chd che chh chn chp chr chs cn- cna cnb cnc cnd cne cnh cnn cnp cnr cns cpa cpb cpc cpd cpe cph cpn cpp cpr cps cra crb crc crd cre crh crn crp crr crs csa csb csc csd cse csh csn csp csr css daa dab dac dad dae dah dan dap dar das dba dbb dbc dbd dbe dbh dbn dbp dbr dbs dca dcb dcc dcd dce dcn dcp dcr dcs dda ddb ddc ddd dde ddh ddn ddp ddr dds de- dea deb dec ded dee deh den dep der des dh- dha dhb dhc dhd dhe dhh dhp dhr dhs dna dnb dnc dnd dne dnh dnn dnp dnr dns dpa dpb dpc dpd dpe dph dpn dpp dpr dps dra drb drc drd dre drn drp drr drs dsa dsb dsc dsd dse dsh dsn dsp dsr dss eaa eab eac ead eae eah ean eap ear eas eba ebb ebc ebd ebe ebh ebn ebp ebr ebs ec- eca ecb ecc ecd ece ech ecn ecr ecs ed- eda edb edc edd ede edh edn edp edr eds eea eeb eec eed eee een eep eer ees eha ehb ehc ehd ehe ehh ehn ehp ehr ehs en- ena enb enc end ene enh enn enp enr ens ep- epa epb epc epd epe eph epn epp epr eps era erb erc erd ere erh ern erp err ers es- esa esb esc esd ese esh esn esp esr ess haa hab hac had hae hah han hap har has hba hbb hbc hbd hbe hbh hbn hbp hbr hbs hca hcb hcc hcd hce hch hcn hcp hcr hcs hda hdb hdc hdd hde hdh hdn hdp hdr hds he- hea heb hec hed hee heh hen hep her hes hha hhb hhc hhd hhe hhh hhn hhp hhr hhs hna hnb hnc hnd hne hnh hnn hns hpa hpb hpc hpd hpe hph hpn hpp hpr hps hr- hra hrb hrc hrd hre hrh hrn hrp hrr hrs hsa hsb hsc hsd hse hsh hsn hsp hsr hss naa nab nac nad nae nah nan nap nar nas nba nbb nbc nbd nbe nbn nbp nbr nbs nca ncb ncc ncd nce nch ncn ncp ncr ncs nda ndb ndc ndd nde ndh ndn ndp ndr nds ne- nea neb nec ned nee neh nen nep ner nes nha nhb nhc nhd nhe nhh nhn nhp nhr nhs nna nnb nnc nne nnh nnn nnp nns npa npb npc npd npe nph npn npp npr nps nra nrb nrc nrd nre nrn nrp nrr nrs nsa nsb nsc nsd nse nsh nsn nsp nsr nss p-p paa pab pac pad pae pah pan pap par pas pba pbb pbc pbd pbe pbn pbp pbr pbs pca pcb pcc pcd pce pch pcn pcp pcr pcs pda pdb pdc pdd pde pdh pdn pdp pdr pds pea peb pec ped pee peh pen pep per pes pha phb phc phd phe phn php phr phs pn- pna pnb pnc pnd pne pnh pnn pnp pnr pns ppa ppb ppc ppd ppe pph ppn ppp ppr pps pra prb prc prd pre prh prn prp prr prs ps- psa psb psc psd pse psh psn psp psr pss ra- raa rab rac rad rae rah ran rap rar ras rba rbb rbc rbd rbe rbh rbn rbp rbr rbs rca rcb rcc rcd rce rch rcn rcp rcr rcs rda rdb rdc rdd rde rdh rdn rdp rdr rds re- rea reb rec red ree reh ren rep rer res rh- rha rhb rhc rhd rhe rhh rhn rhp rhr rhs rna rnb rnc rnd rnh rnn rnp rnr rns rpa rpb rpc rpd rpe rph rpn rpp rpr rps rra rrb rrc rrd rrh rrn rrp rrr rrs rsa rsb rsc rsd rse rsh rsn rsp rsr rss saa sab sac sad sae sah san sap sar sas sba sbb sbc sbd sbe sbh sbn sbp sbr sbs sca scb scc scd sce sch scn scp scr scs sda sdb sdc sdd sde sdh sdn sdp sdr sds se- sea seb sec sed see seh sen sep ser ses sh- sha shb shc shd she shh shn shp shr shs sna snb snc snd sne snn snp snr sns spa spb spc spd spe sph spn spp spr sps sr- sra srb src srd