-er -ic bbb bbc bbe bbf bbh bbi bbn bbo bbr bbs bcb bcc bce bcf bch bci bcn bco bcr bcs be- beb bec bee bef beh bei ben beo ber bes bfb bfc bfe bff bfh bfi bfn bfo bfr bfs bhb bhc bhe bhf bhh bhi bho bhr bhs bi- bib bic bie bif bih bii bin bio bir bis bnb bnc bne bnf bni bnn bno bnr bns bob boc boe bof boh boi bon boo bor bos brb bre brf brh bri brn bro brr brs bsb bsc bse bsf bsh bsi bsn bso bsr bss c-- cbb cbc cbe cbf cbh cbi cbn cbo cbr cbs ccb ccc cce ccf cch cci ccn cco ccr ccs ce- ceb cec cee cef ceh cei cen ceo cer ces cfb cfc cfe cff cfh cfi cfn cfo cfr cfs ch- chb chc che chf chh chi chn cho chr chs ci- cib cic cie cif cih cii cin cio cir cis cn- cnb cnc cne cnf cnh cni cnn cno cnr cns co- cob coc coe cof coh coi con coo cor cos crb crc cre crf crh cri crn cro crr crs csb csc cse csf csh csi csn cso csr css ebb ebc ebe ebf ebh ebi ebn ebo ebr ebs ec- ecb ecc ece ecf ech eci ecn eco ecr ecs eeb eec eee eef een eeo eer ees ef- efb efc efe eff efh efi efo efr efs ehb ehc ehe ehf ehh ehi ehn eho ehr ehs eib eic eie eif eii ein eio eir eis en- enb enc ene enf enh eni enn eno enr ens eo- eob eoc eoe eof eoh eoi eon eoo eor eos erb erc ere erf erh eri ern ero err ers es- esb esc ese esf esh esi esn eso esr ess fbb fbc fbe fbf fbh fbi fbn fbo fbr fbs fcb fcc fce fcf fci fcn fco fcr fcs feb fec fee fef feh fei fen feo fer fes ffc ffe fff ffh ffi ffn ffo ffr ffs fhb fhc fhe fhf fhh fhi fhn fho fhr fhs fib fic fie fif fih fii fin fir fis fnb fnc fne fnf fnh fni fnn fnr fns fob foc foe fof foh foi fon foo for fos frb frc fre frf frh fri frn fro frr frs fsb fsc fse fsf fsh fsi fsn fso fsr fss h-i hbb hbc hbe hbf hbh hbi hbn hbo hbr hbs hcb hcc hce hcf hch hci hcn hco hcr hcs he- heb hec hee hef heh hei hen heo her hes hfb hfc hfe hff hfh hfi hfn hfo hfr hfs hhb hhc hhe hhf hhh hhi hhn hho hhr hhs hib hic hie hif hih hii hin hio hir his hnb hnc hne hnf hnh hnn hno hns hob hoc hoe hof hoh hoi hon hoo hor hos hr- hrb hrc hre hrf hrh hri hrn hro hrr hrs hsb hsc hse hsf hsh hsi hsn hsr hss i-f ibb ibc ibe ibf ibh ibi ibn ibo ibr ibs icb icc ice icf ich ici icn ico icr ics ie- iec iee ief iei ien ier ies ifb ifc ife iff ifi ifn ifo ifr ifs ihb ihc ihe ihf ihh ihi ihn iho ihr ihs iib iic iie iif iih iii iin iio iir iis in- inb inc ine inf inh ini inn ino inr ins io- iob ioc ioe iof ioh ioi ion ioo ior ios ir- irb irc ire irf iri irn iro irr irs is- isb isc ise isf ish isi isn iso isr iss n-i nbb nbc nbe nbf nbi nbn nbo nbr nbs ncb ncc nce ncf nch nci ncn nco ncr ncs ne- neb nec nee nef neh nei nen neo ner nes nfb nfc nfe nff nfi nfn nfo nfr nfs nhb nhc nhe nhf nhh nhi nhn nhr nhs nib nic nie nif nih nii nin nio nir nis nnb nnc nne nnf nnh nni nnn nno nns no- nob noc noe nof noh noi non noo nor nos nrb nrc nre nrf nri nrn nro nrr nrs nsb nsc nse nsf nsh nsi nsn nso nsr nss o-i ob- obb obc obe obf obh obi obn obo obr obs oc- ocb occ ocf och oci ocn oco ocr ocs oeb oec oee oef oeh oei oen oeo oer oes of- ofb ofc ofe off ofi ofn ofo ofr ofs ohc ohe ohf ohh ohi ohn oho ohr ohs oib oic oie oif oii oin oio oir ois on- onb onc one onf onh oni onn ono onr ons oo- oob ooc oof ooh ooi oon ooo oor oos or- orb orc ore orf orh ori orn oro orr ors os- osb osc ose osf osh osi osn oso osr oss rbb rbc rbe rbf rbh rbi rbn rbo rbr rbs rcb rcc rce rcf rch rci rcn rco rcr rcs re- reb rec ree ref reh rei ren reo rer res rfb rfc rfe rff rfh rfi rfn rfo rfr rfs rh- rhb rhc rhe rhf rhh rhi rhn rho rhr rhs rib ric rie rif rih rii rin rio rir ris rnb rnc rnh rni rnn rno rnr rns rob roc roe rof roh roi ron roo ror ros rrb rrc rrf rrh rri rrn rrr rrs rsb rsc rse rsf rsh rsi rsn rso rsr rss sbb sbc sbe sbf sbh sbi sbn sbo sbr sbs scb scc sce scf sch sci scn sco scr scs se- seb sec see sef seh sei sen seo ser ses sfb sfc sfe sff sfh sfi sfn sfo sfr sfs sh- shb shc she shf shh shi shn sho shr shs sib sic sie sif sih sii sin sio sir sis snb snc sne snf sni snn sno snr sns sob soc soe sof soh soi son soo sor sos sr- srb src sre srf srh sri srn sro srr srs ss- ssb ssc sse