-er a-a a-b aaa aab aad aae aag aan aao aar aau ab- aba abb abd abe abg abn abo abr abu ad- ada adb add ade adg adn ado adr adu aea aeb aed aee aeg aen aeo aer aeu ag- aga agb agd age agg agn ago agr agu an- ana anb and ane ang ann ano anr anu aoa aob aod aoe aog aon aoo aor aou ar- ara arb ard are arg arn aro arr aru au- aua aub aud aue aug aun auo aur b-u baa bab bad bae bag ban bao bar bau bba bbb bbd bbe bbg bbn bbo bbr bbu bda bdb bdd bde bdg bdo bdr bdu be- bea beb bed bee beg ben beo ber beu bga bgb bgd bge bgg bgn bgo bgr bgu bna bnb bnd bne bng bnn bno bnr bnu boa bob bod boe bog bon boo bor bou bra brb brd bre brg brn bro brr bru bua bub bud bue bug bun buo bur buu daa dab dad dae dag dan dao dar dau dba dbb dbd dbe dbg dbn dbo dbr dbu dda ddb ddd dde ddg ddn ddo ddr ddu de- dea deb ded dee deg den deo der deu dga dgd dge dgg dgn dgr dgu dna dnb dnd dne dng dnn dno dnr doa dob dod doe dog don doo dor dou dra drb drd dre drg drn dro drr dru dua dub dud due dug dun duo dur eaa eab ead eae eag ean eao ear eau eba ebb ebd ebe ebg ebn ebo ebr ebu ed- eda edb edd ede edg edn edo edr edu eea eeb eed eee eeg een eeo eer ega egb egd ege egg egn ego egr egu en- ena enb end ene eng enn eno enr enu eo- eoa eob eod eoe eog eon eoo eor eou era erb erd ere erg ern ero err eru eu- eua eub eud eue eug eun eur g-d gaa gab gad gae gag gan gao gar gau gba gbd gbe gbg gbn gbo gbr gbu gda gdb gdd gde gdn gdo gdr gdu ge- gea geb ged gee geg gen geo ger geu gga ggb ggd ggg ggn ggo ggr ggu gna gnb gnd gne gnn gno gnr gnu goa gob god goe gog gon goo gor gou gra grb grd gre grg grn gro grr gru gu- gua gub gud gue gug gun guo gur guu naa nab nad nae nag nan nao nar nau nba nbb nbd nbe nbg nbn nbo nbr nbu nda ndb ndd nde ndg ndn ndo ndr ndu ne- nea neb ned nee neg nen neo ner neu nga ngb ngd nge ngg ngn ngo ngu nna nnb nne nng nnn nno nnu no- noa nob nod noe nog non noo nor nou nra nrb nrd nre nrg nrn nro nrr nru nua nub nud nue nug nun nuo nur nuu oaa oab oad oae oag oan oao oar oau ob- oba obb obd obe obg obn obo obr obu oda odb odd ode odg odn odo odr odu oea oeb oed oee oeg oen oeo oer oga ogd oge ogg ogn ogo on- ona onb ond one ong onn ono onr onu oo- ooa oob ood oog oon ooo oor or- ora orb ord ore org orn oro orr oru ou- oua oud oue oun ouo our ra- raa rab rad rae rag ran rao rar rau rba rbb rbd rbe rbg rbn rbo rbr rbu rda rdb rdd rde rdg rdn rdo rdr rdu re- rea reb red ree reg ren reo rer reu rga rgb rgd rge rgg rgn rgo rgr rna rnb rnd rng rnn rno rnr rnu roa rob rod roe rog ron roo ror rou rra rrb rrd rrg rrn rrr rru rua rub rud rue rug run ruo rur ruu ua- uaa uab uad uae uag uan uao uar uau uba ubb ube ubg ubn ubo ubr ubu uda udb udd ude udg udn udo udr udu uea ueb ued uee ueg uen uer uga ugb uge ugg ugn ugo ugr ugu un- una unb und une ung unn uno unr unu uoa uob uod uoe uog uon uoo uor ur- ura urb urd ure urg urn uro urr uru uua uue uug uun uur uuu