-er -th b-u bbb bbc bbd bbe bbh bbk bbn bbo bbr bbs bbt bbu bcb bcc bcd bce bch bck bcn bco bcr bcs bct bcu bdb bdc bdd bde bdh bdk bdo bdr bds bdt bdu be- beb bec bed bee beh bek ben beo ber bes bet beu bhb bhc bhd bhe bhh bhk bho bhr bhs bht bhu bkb bkc bke bkk bkn bko bkr bks bkt bnb bnc bnd bne bnk bnn bno bnr bns bnt bnu bob boc bod boe boh bok bon boo bor bos bot bou brb brd bre brh brk brn bro brr brs brt bru bsb bsc bsd bse bsh bsk bsn bso bsr bss bst bsu btb btc btd bte bth btk btn bto btr bts btt btu bub buc bud bue buh buk bun buo bur bus but buu c-- cbb cbc cbd cbe cbh cbk cbn cbo cbr cbs cbt cbu ccb ccc ccd cce cch cck ccn cco ccr ccs cct ccu cdb cdc cdd cde cdh cdk cdn cdo cdr cds cdt cdu ce- ceb cec ced cee ceh cek cen ceo cer ces cet ceu ch- chb chc chd che chh chk chn cho chr chs cht chu ckb ckc ckd ckh cko cks ckt cn- cnb cnc cnd cne cnh cnn cno cnr cns cnt cnu co- cob coc cod coe coh cok con coo cor cos cot cou crb crc crd cre crh crk crn cro crr crs crt cru csb csc csd cse csh csk csn cso csr css cst csu ctb ctc ctd cte cth ctk ctn cto ctr cts ctt ctu cub cuc cud cue cuh cuk cun cuo cur cus cut cuu dbb dbc dbd dbe dbh dbk dbn dbo dbr dbs dbt dbu dcb dcc dcd dce dck dcn dco dcr dcs dct dcu ddb ddc ddd dde ddh ddk ddn ddo ddr dds ddt ddu de- deb dec ded dee deh dek den deo der des det deu dh- dhb dhc dhd dhe dhh dhk dho dhr dhs dht dhu dkb dkc dke dkk dko dkr dks dkt dku dnb dnc dnd dne dnh dnk dnn dno dnr dns dnt dob doc dod doe doh dok don doo dor dos dot dou drb drc drd dre drk drn dro drr drs drt dru dsb dsc dsd dse dsh dsk dsn dso dsr dss dst dsu dtb dtc dtd dte dth dtk dtn dto dtr dts dtt dtu dub duc dud due duh duk dun duo dur dus dut ebb ebc ebd ebe ebh ebk ebn ebo ebr ebs ebt ebu ec- ecb ecc ecd ece ech eck ecn eco ecr ecs ect ecu ed- edb edc edd ede edh edk edn edo edr eds edt edu eeb eec eed eee eek een eeo eer ees eet ehb ehc ehd ehe ehh ehn eho ehr ehs eht ehu ekb ekc ekd eke ekh eko ekr eks ekt eku en- enb enc end ene enh enk enn eno enr ens ent enu eo- eob eoc eod eoe eoh eok eon eoo eor eos eot eou erb erc erd ere erh erk ern ero err ers ert eru es- esb esc esd ese esh esk esn eso esr ess est esu etb etc etd ete eth etk etn eto etr ets ett etu eu- eub euc eud eue eun eur eus eut hbb hbc hbd hbe hbh hbk hbn hbo hbr hbs hbt hbu hcb hcc hcd hce hch hck hcn hco hcr hcs hct hdb hdc hdd hde hdh hdk hdn hdo hdr hds hdt hdu he- heb hec hed hee heh hek hen heo her hes het heu hhb hhc hhd hhe hhh hhk hhn hho hhr hhs hht hhu hkb hkd hkh hkk hkn hko hkr hks hkt hku hnb hnc hnd hne hnh hnk hnn hno hns hnt hnu hob hoc hod hoe hoh hok hon hoo hor hos hot hou hr- hrb hrc hrd hre hrh hrk hrn hro hrr hrs hrt hru hsb hsc hsd hse hsh hsk hsn hsr hss hst hsu htb htc htd hte hth htk htn hto htr hts htt hub huc hud hue huh huk hun huo hur hus hut huu k-t kbb kbc kbd kbe kbh kbk kbn kbo kbr kbs kbu kcb kcc kcd kce kch kck kcn kcr kcs kct kcu kdb kdc kde kdh kdk kdo kdr kds kdt kdu ke- keb kec ked kee keh kek ken keo ker kes ket khe khh khk khn kho khr khs khu kkb kkc kke kkh kkk kkn kkr kks kkt kku kn- knc knd kne knk knn kno knr knt knu kob koc kod koe koh kok kon koo kor kos kot kou krc krd krk krn kro krr krs krt kru ksb ksc ksd kse ksh ksk ksn kso ksr kss kst ksu ktb ktc kte kth ktk ktn kto ktr kts ktt ktu kub kuc kud kue kuh kuk kun kur kus kut kuu nbb nbc nbd nbe nbk nbn nbo nbr nbs nbt nbu ncb ncc ncd nce nch nck ncn nco ncr ncs nct ncu ndb ndc ndd nde ndh ndk ndn ndo ndr nds ndt ndu ne- neb nec ned nee neh nek nen neo ner nes net neu nhb nhc nhd nhe nhh nhk nhn nhr nhs nht nhu nkc nke nkk nkn nko nkr nks nkt nku nnb nnc nne nnh nnk nnn nno nns nnt nnu no- nob noc nod noe noh nok non noo nor nos not nou nrb nrc nrd nre nrk nrn nro nrr nrs nrt nru nsb nsc nsd nse nsh nsk nsn nso nsr nss nst nsu ntb ntc ntd nte nth ntk ntn nto ntr nts ntt ntu nub nuc nud nue nuh nuk nun nuo nur nus nut nuu ob- obb obc obd obe obh obk obn obo obr obs obt obu oc- ocb occ ocd och ock ocn oco ocr ocs oct ocu odb odc odd ode odh odn