-er -th a-a a-b a-t aaa aab aad aae aag aah aar aat ab- aba abb abd abe abg abh abr abt ad- ada adb add ade adg adh adr adt aea aeb aed aee aeg aeh aer aet ag- aga agb agd age agg agh agr agt aha ahb ahd ahe ahg ahh ahr aht ar- ara arb ard are arg arh arr art at- ata atb atd ate atg ath atr att baa bab bad bae bag bah bar bat bba bbb bbd bbe bbg bbh bbr bbt bda bdb bdd bde bdg bdh bdr bdt be- bea beb bed bee beg beh ber bet bga bgb bgd bge bgg bgh bgr bgt bha bhb bhd bhe bhg bhh bhr bht bra brb brd bre brg brh brr brt bta btb btd bte btg bth btr btt daa dab dad dae dag dah dar dat dba dbb dbd dbe dbg dbh dbr dbt dda ddb ddd dde ddg ddh ddr ddt de- dea deb ded dee deg deh der det dga dgd dge dgg dgh dgr dgt dh- dha dhb dhd dhe dhh dhr dht dra drb drd dre drg drr drt dta dtb dtd dte dtg dth dtr dtt eaa eab ead eae eag eah ear eat eba ebb ebd ebe ebg ebh ebr ebt ed- eda edb edd ede edg edh edr edt eea eeb eed eee eeg eer eet ega egb egd ege egg egh egr egt eha ehb ehd ehe ehg ehh ehr eht era erb erd ere erg erh err ert eta etb etd ete etg eth etr ett g-d gaa gab gad gae gag gah gar gat gba gbd gbe gbg gbh gbr gbt gda gdb gdd gde gdh gdr gdt ge- gea geb ged gee geg geh ger get gga ggb ggd ggg ggh ggr ggt gha ghb ghd ghe ghg ghh ghr ght gra grb grd gre grg grh grr grt gta gtb gtd gte gtg gth gtr gtt haa hab had hae hag hah har hat hba hbb hbd hbe hbg hbh hbr hbt hda hdb hdd hde hdg hdh hdr hdt he- hea heb hed hee heg heh her het hga hgb hge hgg hgh hgr hgt hha hhb hhd hhe hhg hhh hhr hht hr- hra hrb hrd hre hrg hrh hrr hrt hta htb htd hte htg hth htr htt ra- raa rab rad rae rag rah rar rat rba rbb rbd rbe rbg rbh rbr rbt rda rdb rdd rde rdg rdh rdr rdt re- rea reb red ree reg reh rer ret rga rgb rgd rge rgg rgh rgr rgt rh- rha rhb rhd rhe rhg rhh rhr rht rra rrb rrd rrg rrh rrr rrt rta rtb rtd rte rtg rtr rtt taa tab tad tae tag tah tar tat tba tbb tbd tbe tbg tbh tbr tbt tda tdb tdd tde tdg tdh tdr tdt te- tea teb ted tee teg teh ter tet tga tgb tge tgg tgh tgr tgt th- tha thb thd the thg thh thr tht tra trb trd tre trg trh trr trt tta ttb ttd tte ttg tth ttr ttt