-er a-a a-b a-t aaa aab aad aae aag aan aar aat aau ab- aba abb abd abe abg abn abr abt abu ad- ada adb add ade adg adn adr adt adu aea aeb aed aee aeg aen aer aet aeu ag- aga agb agd age agg agn agr agt agu an- ana anb and ane ang ann anr ant anu ar- ara arb ard are arg arn arr art aru at- ata atb atd ate atg atn atr att atu au- aua aub aud aue aug aun aur aut b-u baa bab bad bae bag ban bar bat bau bba bbb bbd bbe bbg bbn bbr bbt bbu bda bdb bdd bde bdg bdr bdt bdu be- bea beb bed bee beg ben ber bet beu bga bgb bgd bge bgg bgn bgr bgt bgu bna bnb bnd bne bng bnn bnr bnt bnu bra brb brd bre brg brn brr brt bru bta btb btd bte btg btn btr btt btu bua bub bud bue bug bun bur but buu daa dab dad dae dag dan dar dat dau dba dbb dbd dbe dbg dbn dbr dbt dbu dda ddb ddd dde ddg ddn ddr ddt ddu de- dea deb ded dee deg den der det deu dga dgd dge dgg dgn dgr dgt dgu dna dnb dnd dne dng dnn dnr dnt dra drb drd dre drg drn drr drt dru dta dtb dtd dte dtg dtn dtr dtt dtu dua dub dud due dug dun dur dut eaa eab ead eae eag ean ear eat eau eba ebb ebd ebe ebg ebn ebr ebt ebu ed- eda edb edd ede edg edn edr edt edu eea eeb eed eee eeg een eer eet ega egb egd ege egg egn egr egt egu en- ena enb end ene eng enn enr ent enu era erb erd ere erg ern err ert eru eta etb etd ete etg etn etr ett etu eu- eua eub eud eue eug eun eur eut g-d gaa gab gad gae gag gan gar gat gau gba gbd gbe gbg gbn gbr gbt gbu gda gdb gdd gde gdn gdr gdt gdu ge- gea geb ged gee geg gen ger get geu gga ggb ggd ggg ggn ggr ggt ggu gna gnb gnd gne gnn gnr gnt gnu gra grb grd gre grg grn grr grt gru gta gtb gtd gte gtg gtn gtr gtt gtu gu- gua gub gud gue gug gun gur gut guu naa nab nad nae nag nan nar nat nau nba nbb nbd nbe nbg nbn nbr nbt nbu nda ndb ndd nde ndg ndn ndr ndt ndu ne- nea neb ned nee neg nen ner net neu nga ngb ngd nge ngg ngn ngt ngu nna nnb nne nng nnn nnt nnu nra nrb nrd nre nrg nrn nrr nrt nru nta ntb ntd nte ntg ntn ntr ntt ntu nua nub nud nue nug nun nur nut nuu ra- raa rab rad rae rag ran rar rat rau rba rbb rbd rbe rbg rbn rbr rbt rbu rda rdb rdd rde rdg rdn rdr rdt rdu re- rea reb red ree reg ren rer ret reu rga rgb rgd rge rgg rgn rgr rgt rna rnb rnd rng rnn rnr rnt rnu rra rrb rrd rrg rrn rrr rrt rru rta rtb rtd rte rtg rtn rtr rtt rtu rua rub rud rue rug run rur rut ruu taa tab tad tae tag tan tar tat tau tba tbb tbd tbe tbg tbn tbr tbt tbu tda tdb tdd tde tdg tdn tdr tdt tdu te- tea teb ted tee teg ten ter tet teu tga tgb tge tgg tgn tgr tgt tgu tna tnb tnd tne tng tnn tnr tnt tra trb trd tre trg trn trr trt tru tta ttb ttd tte ttg ttn ttr ttt ttu tua tub tud tue tug tun tur tut tuu ua- uaa uab uad uae uag uan uar uat uau uba ubb ube ubg ubn ubr ubt ubu uda udb udd ude udg udn udr udt udu uea ueb ued uee ueg uen uer uet uga ugb uge ugg ugn ugr ugt ugu un- una unb und une ung unn unr unt unu ur- ura urb urd ure urg urn urr urt uru uta utb utd ute utn utr utt utu uua uue uug uun uur uut uuu