-er b-u bbb bbd bbe bbg bbn bbo bbr bbu bdb bdd bde bdg bdo bdr bdu be- beb bed bee beg ben beo ber beu bgb bgd bge bgg bgn bgo bgr bgu bnb bnd bne bng bnn bno bnr bnu bob bod boe bog bon boo bor bou brb brd bre brg brn bro brr bru bub bud bue bug bun buo bur buu dbb dbd dbe dbg dbn dbo dbr dbu ddb ddd dde ddg ddn ddo ddr ddu de- deb ded dee deg den deo der deu dgd dge dgg dgn dgr dgu dnb dnd dne dng dnn dno dnr dob dod doe dog don doo dor dou drb drd dre drg drn dro drr dru dub dud due dug dun duo dur ebb ebd ebe ebg ebn ebo ebr ebu ed- edb edd ede edg edn edo edr edu eeb eed eee eeg een eeo eer egb egd ege egg egn ego egr egu en- enb end ene eng enn eno enr enu eo- eob eod eoe eog eon eoo eor eou erb erd ere erg ern ero err eru eu- eub eud eue eug eun eur g-d gbd gbe gbg gbn gbo gbr gbu gdb gdd gde gdn gdo gdr gdu ge- geb ged gee geg gen geo ger geu ggb ggd ggg ggn ggo ggr ggu gnb gnd gne gnn gno gnr gnu gob god goe gog gon goo gor gou grb grd gre grg grn gro grr gru gu- gub gud gue gug gun guo gur guu nbb nbd nbe nbg nbn nbo nbr nbu ndb ndd nde ndg ndn ndo ndr ndu ne- neb ned nee neg nen neo ner neu ngb ngd nge ngg ngn ngo ngu nnb nne nng nnn nno nnu no- nob nod noe nog non noo nor nou nrb nrd nre nrg nrn nro nrr nru nub nud nue nug nun nuo nur nuu ob- obb obd obe obg obn obo obr obu odb odd ode odg odn odo odr odu oeb oed oee oeg oen oeo oer ogd oge ogg ogn ogo on- onb ond one ong onn ono onr onu oo- oob ood oog oon ooo oor or- orb ord ore org orn oro orr oru ou- oud oue oun ouo our rbb rbd rbe rbg rbn rbo rbr rbu rdb rdd rde rdg rdn rdo rdr rdu re- reb red ree reg ren reo rer reu rgb rgd rge rgg rgn rgo rgr rnb rnd rng rnn rno rnr rnu rob rod roe rog ron roo ror rou rrb rrd rrg rrn rrr rru rub rud rue rug run ruo rur ruu ubb ube ubg ubn ubo ubr ubu udb udd ude udg udn udo udr udu ueb ued uee ueg uen uer ugb uge ugg ugn ugo ugr ugu un- unb und une ung unn uno unr unu uob uod uoe uog uon uoo uor ur- urb urd ure urg urn uro urr uru uue uug uun uur uuu