-er bbb bbc bbd bbe bbf bbh bbn bbo bbr bcb bcc bcd bce bcf bch bcn bco bcr bdb bdc bdd bde bdf bdh bdo bdr be- beb bec bed bee bef beh ben beo ber bfb bfc bfd bfe bff bfh bfn bfo bfr bhb bhc bhd bhe bhf bhh bho bhr bnb bnc bnd bne bnf bnn bno bnr bob boc bod boe bof boh bon boo bor brb brd bre brf brh brn bro brr c-- cbb cbc cbd cbe cbf cbh cbn cbo cbr ccb ccc ccd cce ccf cch ccn cco ccr cdb cdc cdd cde cdf cdh cdn cdo cdr ce- ceb cec ced cee cef ceh cen ceo cer cfb cfc cfd cfe cff cfh cfn cfo cfr ch- chb chc chd che chf chh chn cho chr cn- cnb cnc cnd cne cnf cnh cnn cno cnr co- cob coc cod coe cof coh con coo cor crb crc crd cre crf crh crn cro crr dbb dbc dbd dbe dbf dbh dbn dbo dbr dcb dcc dcd dce dcf dcn dco dcr ddb ddc ddd dde ddf ddh ddn ddo ddr de- deb dec ded dee def deh den deo der dfb dfc dfd dfe dff dfh dfn dfo dfr dh- dhb dhc dhd dhe dhf dhh dho dhr dnb dnc dnd dne dnf dnh dnn dno dnr dob doc dod doe dof doh don doo dor drb drc drd dre drn dro drr ebb ebc ebd ebe ebf ebh ebn ebo ebr ec- ecb ecc ecd ece ecf ech ecn eco ecr ed- edb edc edd ede edf edh edn edo edr eeb eec eed eee eef een eeo eer ef- efb efc efd efe eff efh efo efr ehb ehc ehd ehe ehf ehh ehn eho ehr en- enb enc end ene enf enh enn eno enr eo- eob eoc eod eoe eof eoh eon eoo eor erb erc erd ere erf erh ern ero err fbb fbc fbd fbe fbf fbh fbn fbo fbr fcb fcc fcd fce fcf fcn fco fcr fdb fdc fdd fde fdf fdh fdn fdo fdr feb fec fed fee fef feh fen feo fer ffc ffd ffe fff ffh ffn ffo ffr fhb fhc fhe fhf fhh fhn fho fhr fnb fnc fnd fne fnf fnh fnn fnr fob foc foe fof foh fon foo for frb frc frd fre frf frh frn fro frr hbb hbc hbd hbe hbf hbh hbn hbo hbr hcb hcc hcd hce hcf hch hcn hco hcr hdb hdc hdd hde hdf hdh hdn hdo hdr he- heb hec hed hee hef heh hen heo her hfb hfc hfd hfe hff hfh hfn hfo hfr hhb hhc hhd hhe hhf hhh hhn hho hhr hnb hnc hnd hne hnf hnh hnn hno hob hoc hod hoe hof hoh hon hoo hor hr- hrb hrc hrd hre hrf hrh hrn hro hrr nbb nbc nbd nbe nbf nbn nbo nbr ncb ncc ncd nce ncf nch ncn nco ncr ndb ndc ndd nde ndf ndh ndn ndo ndr ne- neb nec ned nee nef neh nen neo ner nfb nfc nfd nfe nff nfn nfo nfr nhb nhc nhd nhe nhf nhh nhn nhr nnb nnc nne nnf nnh nnn nno no- nob noc nod noe nof noh non noo nor nrb nrc nrd nre nrf nrn nro nrr ob- obb obc obd obe obf obh obn obo obr oc- ocb occ ocd ocf och ocn oco ocr odb odc odd ode odf odh odn odo odr oeb oec oed oee oef oeh oen oeo oer of- ofb ofc ofd ofe off ofn ofo ofr ohc ohd ohe ohf ohh ohn oho ohr on- onb onc ond one onf onh onn ono onr oo- oob ooc ood oof ooh oon ooo oor or- orb orc ord ore orf orh orn oro orr rbb rbc rbd rbe rbf rbh rbn rbo rbr rcb rcc rcd rce rcf rch rcn rco rcr rdb rdc rdd rde rdf rdh rdn rdo rdr re- reb rec red ree ref reh ren reo rer rfb rfc rfd rfe rff rfh rfn rfo rfr rh- rhb rhc rhd rhe rhf rhh rhn rho rhr rnb rnc rnd rnh rnn rno rnr rob roc rod roe rof roh ron roo ror rrb rrc rrd rrf rrh rrn rrr