-er -th a-a a-b a-c a-t aaa aab aac aae aah aao aap aar aas aat ab- aba abb abc abe abh abo abp abr abs abt ac- aca acb acc ace ach aco acp acr acs act aea aeb aec aee aeh aeo aep aer aes aet aha ahb ahc ahe ahh aho ahp ahr ahs aht aoa aob aoc aoe aoh aoo aop aor aos aot ap- apa apb apc ape aph apo app apr aps apt ar- ara arb arc are arh aro arp arr ars art as- asa asb asc ase ash aso asp asr ass ast at- ata atb atc ate ath ato atp atr ats att b-p baa bab bac bae bah bao bap bar bas bat bba bbb bbc bbe bbh bbo bbp bbr bbs bbt bca bcb bcc bce bch bco bcp bcr bcs bct be- bea beb bec bee beh beo bep ber bes bet bha bhb bhc bhe bhh bho bhp bhr bhs bht boa bob boc boe boh boo bop bor bos bot bpa bpb bpc bpe bph bpo bpp bpr bps bpt bra brb bre brh bro brp brr brs brt bsa bsb bsc bse bsh bso bsp bsr bss bst bta btb btc bte bth bto btp btr bts btt c-- caa cab cac cae cah cao cap car cas cat cba cbb cbc cbe cbh cbo cbp cbr cbs cbt cca ccb ccc cce cch cco ccp ccr ccs cct ce- cea ceb cec cee ceh ceo cep cer ces cet ch- cha chb chc che chh cho chp chr chs cht co- coa cob coc coe coh coo cop cor cos cot cpa cpb cpc cpe cph cpo cpp cpr cps cpt cra crb crc cre crh cro crp crr crs crt csa csb csc cse csh cso csp csr css cst cta ctb ctc cte cth cto ctp ctr cts ctt eaa eab eac eae eah eao eap ear eas eat eba ebb ebc ebe ebh ebo ebp ebr ebs ebt ec- eca ecb ecc ece ech eco ecr ecs ect eea eeb eec eee eeo eep eer ees eet eha ehb ehc ehe ehh eho ehp ehr ehs eht eo- eoa eob eoc eoe eoh eoo eop eor eos eot ep- epa epb epc epe eph epo epp epr eps ept era erb erc ere erh ero erp err ers ert es- esa esb esc ese esh eso esp esr ess est eta etb etc ete eth eto etp etr ets ett haa hab hac hae hah hao hap har has hat hba hbb hbc hbe hbh hbo hbp hbr hbs hbt hca hcb hcc hce hch hco hcp hcr hcs hct he- hea heb hec hee heh heo hep her hes het hha hhb hhc hhe hhh hho hhp hhr hhs hht hoa hob hoc hoe hoh hoo hop hor hos hot hpa hpb hpc hpe hph hpo hpp hpr hps hpt hr- hra hrb hrc hre hrh hro hrp hrr hrs hrt hsa hsb hsc hse hsh hsp hsr hss hst hta htb htc hte hth hto htp htr hts htt oaa oab oac oae oah oao oap oar oas oat ob- oba obb obc obe obh obo obp obr obs obt oc- oca ocb occ och oco ocp ocr ocs oct oea oeb oec oee oeh oeo oep oer oes oet oha ohc ohe ohh oho ohp ohr ohs oht oo- ooa oob ooc ooh ooo oop oor oos oot op- opa opb opc ope oph opo opp opr ops opt or- ora orb orc ore orh oro orp orr ors ort os- osa osb osc ose osh oso osp osr oss ost ot- ota otb otc ote oth oto otp otr ots ott p-p paa pab pac pae pah pao pap par pas pat pba pbb pbc pbe pbo pbp pbr pbs pbt pca pcb pcc pce pch pco pcp pcr pcs pct pea peb pec pee peh peo pep per pes pet pha phb phc phe pho php phr phs pht poa pob poc poe poh poo pop por pos pot ppa ppb ppc ppe pph ppo ppp ppr pps ppt pra prb prc pre prh pro prp prr prs prt ps- psa psb psc pse psh pso psp psr pss pst pt- pta ptb ptc pte pth pto ptp ptr pts ptt ra- raa rab rac rae rah rao rap rar ras rat rba rbb rbc rbe rbh rbo rbp rbr rbs rbt rca rcb rcc rce rch rco rcp rcr rcs rct re- rea reb rec ree reh reo rep rer res ret rh- rha rhb rhc rhe rhh rho rhp rhr rhs rht roa rob roc roe roh roo rop ror ros rot rpa rpb rpc rpe rph rpo rpp rpr rps rpt rra rrb rrc rrh rrp rrr rrs rrt rsa rsb rsc rse rsh rso rsp rsr rss rst rta rtb rtc rte rto rtp rtr rts rtt saa sab sac sae sah sao sap sar sas sat sba sbb sbc sbe sbh sbo sbp sbr sbs sbt sca scb scc sce sch sco scp scr scs sct se- sea seb sec see seh seo sep ser ses set sh- sha shb shc she shh sho shp shr shs sht soa sob soc soe soh soo sop sor sos sot spa spb spc spe sph spo spp spr sps spt sr- sra srb src sre srh sro srp srr srs srt ss- ssa ssb ssc sse ssh sso ssp ssr sss sst sta stb stc ste sth sto stp str sts stt taa tab tac tae tah tao tap tar tas tat tba tbb tbc tbe tbh tbo tbp tbr tbs tbt tca tcb tcc tce tch tco tcp tcr tcs tct te- tea teb tec tee teh teo tep ter tes tet th- tha thb thc the thh tho thp thr ths tht to- toa tob toc toe toh too top tor tos tot tpa tpb tpc tpe tph tpo tpp tpr