-er b-u bbb bbc bbd bbe bbh bbn bbo bbr bbu bcb bcc bcd bce bch bcn bco bcr bcu bdb bdc bdd bde bdh bdo bdr bdu be- beb bec bed bee beh ben beo ber beu bhb bhc bhd bhe bhh bho bhr bhu bnb bnc bnd bne bnn bno bnr bnu bob boc bod boe boh bon boo bor bou brb brd bre brh brn bro brr bru bub buc bud bue buh bun buo bur buu c-- cbb cbc cbd cbe cbh cbn cbo cbr cbu ccb ccc ccd cce cch ccn cco ccr ccu cdb cdc cdd cde cdh cdn cdo cdr cdu ce- ceb cec ced cee ceh cen ceo cer ceu ch- chb chc chd che chh chn cho chr chu cn- cnb cnc cnd cne cnh cnn cno cnr cnu co- cob coc cod coe coh con coo cor cou crb crc crd cre crh crn cro crr cru cub cuc cud cue cuh cun cuo cur cuu dbb dbc dbd dbe dbh dbn dbo dbr dbu dcb dcc dcd dce dcn dco dcr dcu ddb ddc ddd dde ddh ddn ddo ddr ddu de- deb dec ded dee deh den deo der deu dh- dhb dhc dhd dhe dhh dho dhr dhu dnb dnc dnd dne dnh dnn dno dnr dob doc dod doe doh don doo dor dou drb drc drd dre drn dro drr dru dub duc dud due duh dun duo dur ebb ebc ebd ebe ebh ebn ebo ebr ebu ec- ecb ecc ecd ece ech ecn eco ecr ecu ed- edb edc edd ede edh edn edo edr edu eeb eec eed eee een eeo eer ehb ehc ehd ehe ehh ehn eho ehr ehu en- enb enc end ene enh enn eno enr enu eo- eob eoc eod eoe eoh eon eoo eor eou erb erc erd ere erh ern ero err eru eu- eub euc eud eue eun eur hbb hbc hbd hbe hbh hbn hbo hbr hbu hcb hcc hcd hce hch hcn hco hcr hdb hdc hdd hde hdh hdn hdo hdr hdu he- heb hec hed hee heh hen heo her heu hhb hhc hhd hhe hhh hhn hho hhr hhu hnb hnc hnd hne hnh hnn hno hnu hob hoc hod hoe hoh hon hoo hor hou hr- hrb hrc hrd hre hrh hrn hro hrr hru hub huc hud hue huh hun huo hur huu nbb nbc nbd nbe nbn nbo nbr nbu ncb ncc ncd nce nch ncn nco ncr ncu ndb ndc ndd nde ndh ndn ndo ndr ndu ne- neb nec ned nee neh nen neo ner neu nhb nhc nhd nhe nhh nhn nhr nhu nnb nnc nne nnh nnn nno nnu no- nob noc nod noe noh non noo nor nou nrb nrc nrd nre nrn nro nrr nru nub nuc nud nue nuh nun nuo nur nuu ob- obb obc obd obe obh obn obo obr obu oc- ocb occ ocd och ocn oco ocr ocu odb odc odd ode odh odn odo odr odu oeb oec oed oee oeh oen oeo oer ohc ohd ohe ohh ohn oho ohr ohu on- onb onc ond one onh onn ono onr onu oo- oob ooc ood ooh oon ooo oor or- orb orc ord ore orh orn oro orr oru ou- ouc oud oue ouh oun ouo our rbb rbc rbd rbe rbh rbn rbo rbr rbu rcb rcc rcd rce rch rcn rco rcr rcu rdb rdc rdd rde rdh rdn rdo rdr rdu re- reb rec red ree reh ren reo rer reu rh- rhb rhc rhd rhe rhh rhn rho rhr rhu rnb rnc rnd rnh rnn rno rnr rnu rob roc rod roe roh ron roo ror rou rrb rrc rrd rrh rrn rrr rru rub ruc rud rue ruh run ruo rur ruu ubb ubc ube ubh ubn ubo ubr ubu ucb ucc ucd uce uch ucn uco ucr ucu udb udc udd ude udn udo udr udu ueb uec ued uee ueh uen uer uhb uhc uhd uhe uhh uho uhr uhu un- unb unc und une unh unn uno unr unu uob uoc uod uoe uon uoo uor ur- urb urc urd ure urn uro urr uru uuc uue uun uur uuu