-er b-u bbb bbc bbe bbg bbh bbk bbn bbo bbr bbu bcb bcc bce bcg bch bck bcn bco bcr bcu be- beb bec bee beg beh bek ben beo ber beu bgb bgc bge bgg bgh bgk bgn bgo bgr bgu bhb bhc bhe bhg bhh bhk bho bhr bhu bkb bkc bke bkg bkk bkn bko bkr bnb bnc bne bng bnk bnn bno bnr bnu bob boc boe bog boh bok bon boo bor bou brb bre brg brh brk brn bro brr bru bub buc bue bug buh buk bun buo bur buu c-- cbb cbc cbe cbg cbh cbk cbn cbo cbr cbu ccb ccc cce ccg cch cck ccn cco ccr ccu ce- ceb cec cee ceg ceh cek cen ceo cer ceu cgb cgc cge cgg cgh cgn cgo cgr cgu ch- chb chc che chg chh chk chn cho chr chu ckb ckc ckh cko cn- cnb cnc cne cng cnh cnn cno cnr cnu co- cob coc coe cog coh cok con coo cor cou crb crc cre crg crh crk crn cro crr cru cub cuc cue cug cuh cuk cun cuo cur cuu ebb ebc ebe ebg ebh ebk ebn ebo ebr ebu ec- ecb ecc ece ecg ech eck ecn eco ecr ecu eeb eec eee eeg eek een eeo eer egb egc ege egg egh egn ego egr egu ehb ehc ehe ehg ehh ehn eho ehr ehu ekb ekc eke ekg ekh eko ekr eku en- enb enc ene eng enh enk enn eno enr enu eo- eob eoc eoe eog eoh eok eon eoo eor eou erb erc ere erg erh erk ern ero err eru eu- eub euc eue eug eun eur gbc gbe gbg gbh gbk gbn gbo gbr gbu gcb gcc gce gcg gch gck gcn gco gcr gcu ge- geb gec gee geg geh gek gen geo ger geu ggb ggc ggg ggh ggn ggo ggr ggu ghb ghc ghe ghg ghh ghn gho ghr gkb gkh gkn gko gnb gnc gne gnn gno gnr gnu gob goc goe gog goh gok gon goo gor gou grb grc gre grg grh grk grn gro grr gru gu- gub guc gue gug guk gun guo gur guu hbb hbc hbe hbg hbh hbk hbn hbo hbr hbu hcb hcc hce hcg hch hck hcn hco hcr he- heb hec hee heg heh hek hen heo her heu hgb hgc hge hgg hgh hgk hgn hgo hgr hgu hhb hhc hhe hhg hhh hhk hhn hho hhr hhu hkb hkg hkh hkk hkn hko hkr hku hnb hnc hne hng hnh hnk hnn hno hnu hob hoc hoe hog hoh hok hon hoo hor hou hr- hrb hrc hre hrg hrh hrk hrn hro hrr hru hub huc hue hug huh huk hun huo hur huu kbb kbc kbe kbh kbk kbn kbo kbr kbu kcb kcc kce kcg kch kck kcn kcr kcu ke- keb kec kee keg keh kek ken keo ker kgb kgc kgh kgo kgu khe khh khk khn kho khr khu kkb kkc kke kkh kkk kkn kkr kku kn- knc kne kng knk knn kno knr knu kob koc koe kog koh kok kon koo kor kou krc krg krk krn kro krr kru kub kuc kue kug kuh kuk kun kur kuu nbb nbc nbe nbg nbk nbn nbo nbr nbu ncb ncc nce ncg nch nck ncn nco ncr ncu ne- neb nec nee neg neh nek nen neo ner neu ngb ngc nge ngg ngh ngk ngn ngo ngu nhb nhc nhe nhg nhh nhk nhn nhr nhu nkc nke nkk nkn nko nkr nku nnb nnc nne nng nnh nnk nnn nno nnu no- nob noc noe nog noh nok non noo nor nou nrb nrc nre nrg nrk nrn nro nrr nru nub nuc nue nug nuh nuk nun nuo nur nuu ob- obb obc obe obg obh obk obn obo obr obu oc- ocb occ ocg och ock ocn oco ocr ocu oeb oec oee oeg oeh oen oeo oer ogc oge ogg ogh ogn ogo ohc ohe ohg ohh ohn oho ohr ohu okb okc oke okg okk oko okr oku on- onb onc one ong onh onk onn ono onr onu oo- oob ooc oog ooh ook oon ooo oor or- orb orc ore org orh ork orn oro orr oru ou- ouc oue ouh ouk oun ouo our rbb rbc rbe rbg rbh rbk rbn rbo rbr rbu rcb rcc rce rcg rch rcn rco rcr rcu re- reb rec ree reg reh rek ren reo rer reu rgb rgc rge rgg rgh rgk rgn rgo rgr rh- rhb rhc rhe rhg rhh rhn rho rhr rhu rkb rkc rke rkg rkk rko rku rnb rnc rng rnh rnn rno rnr rnu rob roc roe rog roh rok ron roo ror rou rrb rrc rrg rrh rrk rrn rrr rru rub ruc rue rug ruh ruk run ruo rur ruu ubb ubc ube ubg ubh ubk ubn ubo ubr ubu ucb ucc uce ucg uch uck ucn uco ucr ucu ueb uec uee ueg ueh uen uer ugb ugc uge ugg ugh ugk ugn ugo ugr ugu uhb uhc uhe uhh uho uhr uhu ukb ukc uke ukk ukn ukr uku un- unb unc une ung unh unk unn uno unr unu uob uoc uoe uog uok uon uoo uor ur- urb urc ure urg urk urn uro urr uru uuc uue uug uun uur uuu

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