-er a-a a-b aaa aab aad aae aag aaj aar aau ab- aba abb abd abe abg abj abr abu ad- ada adb add ade adg adj adr adu aea aeb aed aee aeg aej aer aeu ag- aga agb agd age agg agj agr agu aja ajb ajd aje ajj ajr aju ar- ara arb ard are arg arj arr aru au- aua aub aud aue aug auj aur b-u baa bab bad bae bag baj bar bau bba bbb bbd bbe bbg bbr bbu bda bdb bdd bde bdg bdj bdr bdu be- bea beb bed bee beg ber beu bga bgb bgd bge bgg bgr bgu bja bjd bjg bjj bjr bju bra brb brd bre brg brj brr bru bua bub bud bue bug buj bur buu daa dab dad dae dag daj dar dau dba dbb dbd dbe dbg dbr dbu dda ddb ddd dde ddg ddr ddu de- dea deb ded dee deg dej der deu dga dgd dge dgg dgr dgu dj- dja djb djd dje djg dra drb drd dre drg drj drr dru dua dub dud due dug dur eaa eab ead eae eag eaj ear eau eba ebb ebd ebe ebg ebj ebr ebu ed- eda edb edd ede edg edj edr edu eea eeb eed eee eeg eer ega egb egd ege egg egr egu eja ejd eju era erb erd ere erg err eru eu- eua eub eud eue eug euj eur g-d gaa gab gad gae gag gaj gar gau gba gbd gbe gbg gbj gbr gbu gda gdb gdd gde gdr gdu ge- gea geb ged gee geg ger geu gga ggb ggd ggg ggj ggr ggu gja gje gjg gjr gra grb grd gre grg grj grr gru gu- gua gub gud gue gug guj gur guu j-d jaa jab jad jae jag jaj jar jau jba jbg jbj jbr jbu jda jdb jde jdg jdr jea jeb jed jee jeg jej jer jeu jga jgb jge jgr jgu jja jjb jjg jjj jjr jju jra jrb jrg jrr jub jud jue jug jur ra- raa rab rad rae rag raj rar rau rba rbb rbd rbe rbg rbr rbu rda rdb rdd rde rdg rdj rdr rdu re- rea reb red ree reg rer reu rga rgb rgd rge rgg rgr rja rjg rjr rra rrb rrd rrg rrr rru rua rub rud rue rug rur ruu ua- uaa uab uad uae uag uaj uar uau uba ubb ube ubg ubr ubu uda udb udd ude udg udj udr udu uea ueb ued uee ueg uer uga ugb uge ugg ugr ugu ur- ura urb urd ure urg urr uru uua uue uug uur uuu