-er a-a a-b a-t aaa aab aad aae aag aam aao aar aat ab- aba abb abd abe abg abm abo abr abt ad- ada adb add ade adg adm ado adr adt aea aeb aed aee aeg aem aeo aer aet ag- aga agb agd age agg agm ago agr agt ama amb amd ame amg amm amo amr amt aoa aob aod aoe aog aom aoo aor aot ar- ara arb ard are arg arm aro arr art at- ata atb atd ate atg atm ato atr att baa bab bad bae bag bam bao bar bat bba bbb bbd bbe bbg bbm bbo bbr bbt bda bdb bdd bde bdg bdm bdo bdr bdt be- bea beb bed bee beg bem beo ber bet bga bgb bgd bge bgg bgm bgo bgr bgt bma bmb bmd bme bmg bmm bmo bmr bmt boa bob bod boe bog bom boo bor bot bra brb brd bre brg brm bro brr brt bta btb btd bte btg btm bto btr btt daa dab dad dae dag dam dao dar dat dba dbb dbd dbe dbg dbm dbo dbr dbt dda ddb ddd dde ddg ddm ddo ddr ddt de- dea deb ded dee deg dem deo der det dga dgd dge dgg dgm dgr dgt dma dmb dmd dme dmg dmm dmo dmr dmt doa dob dod doe dog dom doo dor dot dra drb drd dre drg drm dro drr drt dta dtb dtd dte dtg dtm dto dtr dtt eaa eab ead eae eag eam eao ear eat eba ebb ebd ebe ebg ebm ebo ebr ebt ed- eda edb edd ede edg edm edo edr edt eea eeb eed eee eeg eem eeo eer eet ega egb egd ege egg egm ego egr egt em- ema emb emd eme emg emm emo emr emt eo- eoa eob eod eoe eog eom eoo eor eot era erb erd ere erg erm ero err ert eta etb etd ete etg etm eto etr ett g-d gaa gab gad gae gag gam gao gar gat gba gbd gbe gbg gbm gbo gbr gbt gda gdb gdd gde gdm gdo gdr gdt ge- gea geb ged gee geg gem geo ger get gga ggb ggd ggg ggm ggo ggr ggt gma gmb gmd gme gmg gmm gmo gmr gmt goa gob god goe gog gom goo gor got gra grb grd gre grg grm gro grr grt gta gtb gtd gte gtg gtm gto gtr gtt m-o m-r maa mab mad mae mag mam mao mar mat mba mbb mbd mbe mbg mbm mbo mbr mbt mda mdb mdd mde mdg mdm mdo mdr mdt mea meb med mee meg mem meo mer met mga mgb mgd mge mgm mgo mgr mgt mma mmb mmd mme mmg mmm mmo mmr mmt moa mob mod moe mog mom moo mor mot mra mrb mrd mre mrg mrm mro mrr mrt mta mtb mtd mte mtg mtm mto mtr mtt oaa oab oad oae oag oam oao oar oat ob- oba obb obd obe obg obm obo obr obt oda odb odd ode odg odm odo odr odt oea oeb oed oee oeg oem oeo oer oet oga ogd oge ogg ogo ogt om- oma omb omd ome omg omm omo omr omt oo- ooa oob ood oog oom ooo oor oot or- ora orb ord ore org orm oro orr ort ot- ota otb otd ote otg otm oto otr ott ra- raa rab rad rae rag ram rao rar rat rba rbb rbd rbe rbg rbm rbo rbr rbt rda rdb rdd rde rdg rdm rdo rdr rdt re- rea reb red ree reg rem reo rer ret rga rgb rgd rge rgg rgo rgr rgt rma rmb rmd rme rmg rmm rmo rmr rmt roa rob rod roe rog rom roo ror rot rra rrb rrd rrg rrm rrr rrt rta rtb rtd rte rtg rtm rto rtr rtt taa tab tad tae tag tam tao tar tat tba tbb tbd tbe tbg tbm tbo tbr tbt tda tdb tdd tde tdg tdm tdo tdr tdt te- tea teb ted tee teg tem teo ter tet tga tgb tge tgg tgm tgo tgr tgt tma tmb tmd tme tmg tmm tmo tmr tmt to- toa tob tod toe tog tom too tor tot tra trb trd tre trg trm tro trr trt tta ttb ttd tte ttg ttm tto ttr ttt