-er a-a a-b a-i a-t aaa aab aad aae aag aai aap aar aas aat ab- aba abb abd abe abg abi abp abr abs abt ad- ada adb add ade adg adi adp adr ads adt aea aeb aed aee aeg aei aep aer aes aet ag- aga agb agd age agg agi agp agr ags agt ai- aia aib aid aie aig aii aip air ais ait ap- apa apb apd ape apg api app apr aps apt ar- ara arb ard are arg ari arp arr ars art as- asa asb asd ase asg asi asp asr ass ast at- ata atb atd ate atg ati atp atr ats att b-p baa bab bad bae bag bai bap bar bas bat bba bbb bbd bbe bbg bbi bbp bbr bbs bbt bda bdb bdd bde bdg bdi bdp bdr bds bdt be- bea beb bed bee beg bei bep ber bes bet bga bgb bgd bge bgg bgi bgp bgr bgs bgt bi- bia bib bid bie big bii bip bir bis bit bpa bpb bpd bpe bpg bpi bpp bpr bps bpt bra brb brd bre brg bri brp brr brs brt bsa bsb bsd bse bsg bsi bsp bsr bss bst bta btb btd bte btg bti btp btr bts btt daa dab dad dae dag dai dap dar das dat dba dbb dbd dbe dbg dbi dbp dbr dbs dbt dda ddb ddd dde ddg ddi ddp ddr dds ddt de- dea deb ded dee deg dei dep der des det dga dgd dge dgg dgi dgp dgr dgs dgt di- dia dib did die dig dii dip dir dis dit dpa dpb dpd dpe dpg dpi dpp dpr dps dpt dra drb drd dre drg dri drp drr drs drt dsa dsb dsd dse dsg dsi dsp dsr dss dst dta dtb dtd dte dtg dti dtp dtr dts dtt eaa eab ead eae eag eai eap ear eas eat eba ebb ebd ebe ebg ebi ebp ebr ebs ebt ed- eda edb edd ede edg edi edp edr eds edt eea eeb eed eee eeg eep eer ees eet ega egb egd ege egg egi egp egr egs egt eia eib eid eie eig eii eip eir eis eit ep- epa epb epd epe epg epi epp epr eps ept era erb erd ere erg eri erp err ers ert es- esa esb esd ese esg esi esp esr ess est eta etb etd ete etg eti etp etr ets ett g-d g-p gaa gab gad gae gag gai gap gar gas gat gba gbd gbe gbg gbi gbp gbr gbs gbt gda gdb gdd gde gdi gdp gdr gds gdt ge- gea geb ged gee geg gei gep ger ges get gga ggb ggd ggg ggi ggp ggr ggs ggt gia gib gid gie gig gii gip gir gis git gpa gpb gpd gpe gpg gpi gpp gpr gps gpt gra grb grd gre grg gri grp grr grs grt gsa gsb gsd gse gsg gsi gsp gsr gss gst gta gtb gtd gte gtg gti gtp gtr gts gtt i-d ia- iaa iab iad iae iag iai iap iar ias iat iba ibb ibd ibe ibg ibi ibp ibr ibs ibt ida idb idd ide idg idi idp idr ids idt ie- iea ied iee ieg iei iep ier ies iet iga igb igd ige igg igi igp igr igs igt iia iib iid iie iii iip iir iis iit ipa ipb ipd ipe ipg ipi ipp ipr ips ipt ir- ira irb ird ire irg iri irp irr irs irt is- isa isb isd ise isg isi isp isr iss ist ita itb itd ite itg iti itp its itt p-p paa pab pad pae pag pai pap par pas pat pba pbb pbd pbe pbg pbi pbp pbr pbs pbt pda pdb pdd pde pdg pdi pdp pdr pds pdt pea peb ped pee peg pei pep per pes pet pga pgb pgd pge pgg pgi pgp pgr pgs pgt pia pib pid pie pig pii pip pir pis pit ppa ppb ppd ppe ppg ppi ppp ppr pps ppt pra prb prd pre prg pri prp prr prs prt ps- psa psb psd pse psg psi psp psr pss pst pt- pta ptb ptd pte ptg pti ptp ptr pts ptt ra- raa rab rad rae rag rai rap rar ras rat rba rbb rbd rbe rbg rbi rbp rbr rbs rbt rda rdb rdd rde rdg rdi rdp rdr rds rdt re- rea reb red ree reg rei rep rer res ret rga rgb rgd rge rgg rgi rgp rgr rgs rgt ria rib rid rie rig rii rip rir ris rit rpa rpb rpd rpe rpg rpi rpp rpr rps rpt rra rrb rrd rrg rri rrp rrr rrs rrt rsa rsb rsd rse rsg rsi rsp rsr rss rst rta rtb rtd rte rtg rti rtp rtr rts rtt saa sab sad sae sag sai sap sar sas sat sba sbb sbd sbe sbg sbi sbp sbr sbs sbt sda sdb sdd sde sdg sdi sdp sdr sds sdt se- sea seb sed see seg sei sep ser ses set sga sgb sgd sge sgg sgi sgp sgr sgs sgt sia sib sid sie sig sii sip sir sis sit spa spb spd spe spg spi spp spr sps spt sr- sra srb srd sre srg sri srp srr srs srt ss- ssa ssb ssd sse ssg ssi ssp ssr sss sst sta stb std ste stg sti stp str sts stt taa tab tad tae tag tai tap tar tas tat tba tbb tbd tbe tbg tbi tbp tbr tbs tbt tda tdb tdd tde tdg tdi tdp tdr tds tdt te- tea teb ted tee teg tei tep ter tes tet tga tgb tge tgg tgi tgp tgr tgs tgt tia tib tid tie tig tii tip tir tis tit tpa tpb tpd tpe tpg tpi tpp tpr tps tpt tra trb