-er a-a a-b a-z aaa aab aad aae aag aao aar aau aaz ab- aba abb abd abe abg abo abr abu abz ad- ada adb add ade adg ado adr adu adz aea aeb aed aee aeg aeo aer aeu aez ag- aga agb agd age agg ago agr agu agz aoa aob aod aoe aog aoo aor aou ar- ara arb ard are arg aro arr aru arz au- aua aub aud aue aug auo aur auz az- aza azb azd aze azg azo azu azz b-u baa bab bad bae bag bao bar bau baz bba bbb bbd bbe bbg bbo bbr bbu bda bdb bdd bde bdg bdo bdr bdu bdz be- bea beb bed bee beg beo ber beu bez bga bgb bgd bge bgg bgo bgr bgu bgz boa bob bod boe bog boo bor bou boz bra brb brd bre brg bro brr bru brz bua bub bud bue bug buo bur buu buz bza bzd bze bzo bzr bzu bzz daa dab dad dae dag dao dar dau daz dba dbb dbd dbe dbg dbo dbr dbu dbz dda ddb ddd dde ddg ddo ddr ddu ddz de- dea deb ded dee deg deo der deu dez dga dgd dge dgg dgr dgu dgz doa dob dod doe dog doo dor dou doz dra drb drd dre drg dro drr dru drz dua dub dud due dug duo dur duz dza dzb dzd dze dzo dzr dzu eaa eab ead eae eag eao ear eau eaz eba ebb ebd ebe ebg ebo ebr ebu ed- eda edb edd ede edg edo edr edu eea eeb eed eee eeg eeo eer ega egb egd ege egg ego egr egu eo- eoa eob eod eoe eog eoo eor eou era erb erd ere erg ero err eru erz eu- eua eub eud eue eug eur eze ezo ezr ezz g-d gaa gab gad gae gag gao gar gau gaz gba gbd gbe gbg gbo gbr gbu gbz gda gdb gdd gde gdo gdr gdu ge- gea geb ged gee geg geo ger geu gez gga ggb ggd ggg ggo ggr ggu ggz goa gob god goe gog goo gor gou goz gra grb grd gre grg gro grr gru gu- gua gub gud gue gug guo gur guu guz gza gzo gzr gzu oaa oab oad oae oag oao oar oau ob- oba obb obd obe obg obo obr obu oda odb odd ode odg odo odr odu oea oeb oed oee oeg oeo oer oga ogd oge ogg ogo oo- ooa oob ood oog ooo oor or- ora orb ord ore org oro orr oru orz ou- oua oud oue ouo our oza oze ozo ozu ozz ra- raa rab rad rae rag rao rar rau raz rba rbb rbd rbe rbg rbo rbr rbu rda rdb rdd rde rdg rdo rdr rdu re- rea reb red ree reg reo rer reu rez rga rgb rgd rge rgg rgo rgr roa rob rod roe rog roo ror rou roz rra rrb rrd rrg rrr rru rua rub rud rue rug ruo rur ruu ruz rza rzb rze rzo ua- uaa uab uad uae uag uao uar uau uaz uba ubb ube ubg ubo ubr ubu uda udb udd ude udg udo udr udu uea ueb ued uee ueg uer uga ugb uge ugg ugo ugr ugu uoa uob uod uoe uog uoo uor ur- ura urb urd ure urg uro urr uru urz uua uue uug uur uuu uza uzb uzo uzu z-g zaa zab zad zag zao zar zaz zbb zbr zea zeb zed zee zeo zer zez zgb zgg zo- zoa zob zod zoe zog zoo zor zou zro zub zud zug zur zuz zzr zzz