-er -th a-a a-b a-t aaa aab aae aah aao aap aar aas aat ab- aba abb abe abh abo abp abr abs abt aea aeb aee aeh aeo aep aer aes aet aha ahb ahe ahh aho ahp ahr ahs aht aoa aob aoe aoh aoo aop aor aos aot ap- apa apb ape aph apo app apr aps apt ar- ara arb are arh aro arp arr ars art as- asa asb ase ash aso asp asr ass ast at- ata atb ate ath ato atp atr ats att b-p baa bab bae bah bao bap bar bas bat bba bbb bbe bbh bbo bbp bbr bbs bbt be- bea beb bee beh beo bep ber bes bet bha bhb bhe bhh bho bhp bhr bhs bht boa bob boe boh boo bop bor bos bot bpa bpb bpe bph bpo bpp bpr bps bpt bra brb bre brh bro brp brr brs brt bsa bsb bse bsh bso bsp bsr bss bst bta btb bte bth bto btp btr bts btt eaa eab eae eah eao eap ear eas eat eba ebb ebe ebh ebo ebp ebr ebs ebt eea eeb eee eeo eep eer ees eet eha ehb ehe ehh eho ehp ehr ehs eht eo- eoa eob eoe eoh eoo eop eor eos eot ep- epa epb epe eph epo epp epr eps ept era erb ere erh ero erp err ers ert es- esa esb ese esh eso esp esr ess est eta etb ete eth eto etp etr ets ett haa hab hae hah hao hap har has hat hba hbb hbe hbh hbo hbp hbr hbs hbt he- hea heb hee heh heo hep her hes het hha hhb hhe hhh hho hhp hhr hhs hht hoa hob hoe hoh hoo hop hor hos hot hpa hpb hpe hph hpo hpp hpr hps hpt hr- hra hrb hre hrh hro hrp hrr hrs hrt hsa hsb hse hsh hsp hsr hss hst hta htb hte hth hto htp htr hts htt oaa oab oae oah oao oap oar oas oat ob- oba obb obe obh obo obp obr obs obt oea oeb oee oeh oeo oep oer oes oet oha ohe ohh oho ohp ohr ohs oht oo- ooa oob ooh ooo oop oor oos oot op- opa opb ope oph opo opp opr ops opt or- ora orb ore orh oro orp orr ors ort os- osa osb ose osh oso osp osr oss ost ot- ota otb ote oth oto otp otr ots ott p-p paa pab pae pah pao pap par pas pat pba pbb pbe pbo pbp pbr pbs pbt pea peb pee peh peo pep per pes pet pha phb phe pho php phr phs pht poa pob poe poh poo pop por pos pot ppa ppb ppe pph ppo ppp ppr pps ppt pra prb pre prh pro prp prr prs prt ps- psa psb pse psh pso psp psr pss pst pt- pta ptb pte pth pto ptp ptr pts ptt ra- raa rab rae rah rao rap rar ras rat rba rbb rbe rbh rbo rbp rbr rbs rbt re- rea reb ree reh reo rep rer res ret rh- rha rhb rhe rhh rho rhp rhr rhs rht roa rob roe roh roo rop ror ros rot rpa rpb rpe rph rpo rpp rpr rps rpt rra rrb rrh rrp rrr rrs rrt rsa rsb rse rsh rso rsp rsr rss rst rta rtb rte rto rtp rtr rts rtt saa sab sae sah sao sap sar sas sat sba sbb sbe sbh sbo sbp sbr sbs sbt se- sea seb see seh seo sep ser ses set sh- sha shb she shh sho shp shr shs sht soa sob soe soh soo sop sor sos sot spa spb spe sph spo spp spr sps spt sr- sra srb sre srh sro srp srr srs srt ss- ssa ssb sse ssh sso ssp ssr sss sst sta stb ste sth sto stp str sts stt taa tab tae tah tao tap tar tas tat tba tbb tbe tbh tbo tbp tbr tbs tbt te- tea teb tee teh teo tep ter tes tet th- tha thb the thh tho thp thr ths tht to- toa tob toe toh too top tor tos tot tpa tpb tpe tph tpo tpp tpr tps tpt tra trb tre trh tro trp trr trs trt tsa tsb tse tsh tso tsp tsr tss tst tta ttb tte tth tto ttp ttr tts ttt