a-a a-b a-c aaa aab aac aad aah aan aao aap aar aas ab- aba abb abc abd abh abn abo abp abr abs ac- aca acb acc acd ach acn aco acp acr acs ad- ada adb adc add adh adn ado adp adr ads aha ahb ahc ahd ahh ahn aho ahp ahr ahs an- ana anb anc and anh ann ano anp anr ans aoa aob aoc aod aoh aon aoo aop aor aos ap- apa apb apc apd aph apn apo app apr aps ar- ara arb arc ard arh arn aro arp arr ars as- asa asb asc asd ash asn aso asp asr ass b-p baa bab bac bad bah ban bao bap bar bas bba bbb bbc bbd bbh bbn bbo bbp bbr bbs bca bcb bcc bcd bch bcn bco bcp bcr bcs bda bdb bdc bdd bdh bdo bdp bdr bds bha bhb bhc bhd bhh bho bhp bhr bhs bna bnb bnc bnd bnn bno bnp bnr bns boa bob boc bod boh bon boo bop bor bos bpa bpb bpc bpd bph bpn bpo bpp bpr bps bra brb brd brh brn bro brp brr brs bsa bsb bsc bsd bsh bsn bso bsp bsr bss c-- caa cab cac cad cah can cao cap car cas cba cbb cbc cbd cbh cbn cbo cbp cbr cbs cca ccb ccc ccd cch ccn cco ccp ccr ccs cda cdb cdc cdd cdh cdn cdo cdp cdr cds ch- cha chb chc chd chh chn cho chp chr chs cn- cna cnb cnc cnd cnh cnn cno cnp cnr cns co- coa cob coc cod coh con coo cop cor cos cpa cpb cpc cpd cph cpn cpo cpp cpr cps cra crb crc crd crh crn cro crp crr crs csa csb csc csd csh csn cso csp csr css daa dab dac dad dah dan dao dap dar das dba dbb dbc dbd dbh dbn dbo dbp dbr dbs dca dcb dcc dcd dcn dco dcp dcr dcs dda ddb ddc ddd ddh ddn ddo ddp ddr dds dh- dha dhb dhc dhd dhh dho dhp dhr dhs dna dnb dnc dnd dnh dnn dno dnp dnr dns doa dob doc dod doh don doo dop dor dos dpa dpb dpc dpd dph dpn dpo dpp dpr dps dra drb drc drd drn dro drp drr drs dsa dsb dsc dsd dsh dsn dso dsp dsr dss haa hab hac had hah han hao hap har has hba hbb hbc hbd hbh hbn hbo hbp hbr hbs hca hcb hcc hcd hch hcn hco hcp hcr hcs hda hdb hdc hdd hdh hdn hdo hdp hdr hds hha hhb hhc hhd hhh hhn hho hhp hhr hhs hna hnb hnc hnd hnh hnn hno hns hoa hob hoc hod hoh hon hoo hop hor hos hpa hpb hpc hpd hph hpn hpo hpp hpr hps hr- hra hrb hrc hrd hrh hrn hro hrp hrr hrs hsa hsb hsc hsd hsh hsn hsp hsr hss naa nab nac nad nah nan nao nap nar nas nba nbb nbc nbd nbn nbo nbp nbr nbs nca ncb ncc ncd nch ncn nco ncp ncr ncs nda ndb ndc ndd ndh ndn ndo ndp ndr nds nha nhb nhc nhd nhh nhn nhp nhr nhs nna nnb nnc nnh nnn nno nnp nns no- noa nob noc nod noh non noo nop nor nos npa npb npc npd nph npn npo npp npr nps nra nrb nrc nrd nrn nro nrp nrr nrs nsa nsb nsc nsd nsh nsn nso nsp nsr nss oaa oab oac oad oah oan oao oap oar oas ob- oba obb obc obd obh obn obo obp obr obs oc- oca ocb occ ocd och ocn oco ocp ocr ocs oda odb odc odd odh odn odo odp odr ods oha ohc ohd ohh ohn oho ohp ohr ohs on- ona onb onc ond onh onn ono onp onr ons oo- ooa oob ooc ood ooh oon ooo oop oor oos op- opa opb opc opd oph opn opo opp opr ops or- ora orb orc ord orh orn oro orp orr ors os- osa osb osc osd osh osn oso osp osr oss p-p paa pab pac pad pah pan pao pap par pas pba pbb pbc pbd pbn pbo pbp pbr pbs pca pcb pcc pcd pch pcn pco pcp pcr pcs pda pdb pdc pdd pdh pdn pdo pdp pdr pds pha phb phc phd phn pho php phr phs pn- pna pnb pnc pnd pnh pnn pno pnp pnr pns poa pob poc pod poh pon poo pop por pos ppa ppb ppc ppd pph ppn ppo ppp ppr pps pra prb prc prd prh prn pro prp prr prs ps- psa psb psc psd psh psn pso psp psr pss ra- raa rab rac rad rah ran rao rap rar ras rba rbb rbc rbd rbh rbn rbo rbp rbr rbs rca rcb rcc rcd rch rcn rco rcp rcr rcs rda rdb rdc rdd rdh rdn rdo rdp rdr rds rh- rha rhb rhc rhd rhh rhn rho rhp rhr rhs rna rnb rnc rnd rnh rnn rno rnp rnr rns roa rob roc rod roh ron roo rop ror ros rpa rpb rpc rpd rph rpn rpo rpp rpr rps rra rrb rrc rrd rrh rrn rrp rrr rrs rsa rsb rsc rsd rsh rsn rso rsp rsr rss saa sab sac sad sah san sao sap sar sas sba sbb sbc sbd sbh sbn sbo sbp sbr sbs sca scb scc scd sch scn sco scp scr scs sda sdb sdc sdd sdh sdn sdo sdp sdr sds sh- sha shb shc shd shh shn sho shp shr shs sna snb snc snd snn sno snp snr sns soa sob soc sod soh son soo sop sor sos spa spb spc spd sph spn spo spp spr sps sr- sra srb src srd srh srn sro srp