-er -ic b-u bbb bbc bbe bbh bbi bbn bbo bbr bbs bbu bcb bcc bce bch bci bcn bco bcr bcs bcu be- beb bec bee beh bei ben beo ber bes beu bhb bhc bhe bhh bhi bho bhr bhs bhu bi- bib bic bie bih bii bin bio bir bis biu bnb bnc bne bni bnn bno bnr bns bnu bob boc boe boh boi bon boo bor bos bou brb bre brh bri brn bro brr brs bru bsb bsc bse bsh bsi bsn bso bsr bss bsu bub buc bue buh bui bun buo bur bus buu c-- cbb cbc cbe cbh cbi cbn cbo cbr cbs cbu ccb ccc cce cch cci ccn cco ccr ccs ccu ce- ceb cec cee ceh cei cen ceo cer ces ceu ch- chb chc che chh chi chn cho chr chs chu ci- cib cic cie cih cii cin cio cir cis ciu cn- cnb cnc cne cnh cni cnn cno cnr cns cnu co- cob coc coe coh coi con coo cor cos cou crb crc cre crh cri crn cro crr crs cru csb csc cse csh csi csn cso csr css csu cub cuc cue cuh cui cun cuo cur cus cuu ebb ebc ebe ebh ebi ebn ebo ebr ebs ebu ec- ecb ecc ece ech eci ecn eco ecr ecs ecu eeb eec eee een eeo eer ees ehb ehc ehe ehh ehi ehn eho ehr ehs ehu eib eic eie eii ein eio eir eis eiu en- enb enc ene enh eni enn eno enr ens enu eo- eob eoc eoe eoh eoi eon eoo eor eos eou erb erc ere erh eri ern ero err ers eru es- esb esc ese esh esi esn eso esr ess esu eu- eub euc eue eui eun eur eus h-i hbb hbc hbe hbh hbi hbn hbo hbr hbs hbu hcb hcc hce hch hci hcn hco hcr hcs he- heb hec hee heh hei hen heo her hes heu hhb hhc hhe hhh hhi hhn hho hhr hhs hhu hib hic hie hih hii hin hio hir his hiu hnb hnc hne hnh hnn hno hns hnu hob hoc hoe hoh hoi hon hoo hor hos hou hr- hrb hrc hre hrh hri hrn hro hrr hrs hru hsb hsc hse hsh hsi hsn hsr hss hsu hub huc hue huh hui hun huo hur hus huu ibb ibc ibe ibh ibi ibn ibo ibr ibs ibu icb icc ice ich ici icn ico icr ics icu ie- iec iee iei ien ier ies ihb ihc ihe ihh ihi ihn iho ihr ihs ihu iib iic iie iih iii iin iio iir iis iiu in- inb inc ine inh ini inn ino inr ins inu io- iob ioc ioe ioh ioi ion ioo ior ios iou ir- irb irc ire iri irn iro irr irs iru is- isb isc ise ish isi isn iso isr iss isu iu- iub iuc iue iui iur ius n-i nbb nbc nbe nbi nbn nbo nbr nbs nbu ncb ncc nce nch nci ncn nco ncr ncs ncu ne- neb nec nee neh nei nen neo ner nes neu nhb nhc nhe nhh nhi nhn nhr nhs nhu nib nic nie nih nii nin nio nir nis niu nnb nnc nne nnh nni nnn nno nns nnu no- nob noc noe noh noi non noo nor nos nou nrb nrc nre nri nrn nro nrr nrs nru nsb nsc nse nsh nsi nsn nso nsr nss nsu nub nuc nue nuh nui nun nuo nur nus nuu o-i ob- obb obc obe obh obi obn obo obr obs obu oc- ocb occ och oci ocn oco ocr ocs ocu oeb oec oee oeh oei oen oeo oer oes ohc ohe ohh ohi ohn oho ohr ohs ohu oib oic oie oii oin oio oir ois oiu on- onb onc one onh oni onn ono onr ons onu oo- oob ooc ooh ooi oon ooo oor oos or- orb orc ore orh ori orn oro orr ors oru os- osb osc ose osh osi osn oso osr oss osu ou- ouc oue ouh oui oun ouo our ous rbb rbc rbe rbh rbi rbn rbo rbr rbs rbu rcb rcc rce rch rci rcn rco rcr rcs rcu re- reb rec ree reh rei ren reo rer res reu rh- rhb rhc rhe rhh rhi rhn rho rhr rhs rhu rib ric rie rih rii rin rio rir ris rnb rnc rnh rni rnn rno rnr rns rnu rob roc roe roh roi ron roo ror ros rou rrb rrc rrh rri rrn rrr rrs rru rsb rsc rse rsh rsi rsn rso rsr rss rsu rub ruc rue ruh rui run ruo rur rus ruu sbb sbc sbe sbh sbi sbn sbo sbr sbs sbu scb scc sce sch sci scn sco scr scs scu se- seb sec see seh sei sen seo ser ses seu sh- shb shc she shh shi shn sho shr shs shu sib sic sie sih sii sin sio sir sis siu snb snc sne sni snn sno snr sns snu sob soc soe soh soi son soo sor sos sou sr- srb src sre srh sri srn sro srr srs ss- ssb ssc sse ssh ssi ssn sso ssr sss ssu sub suc sue suh sui sun suo sur sus suu ubb ubc ube ubh ubi ubn ubo ubr ubs ubu ucb ucc uce uch uci ucn uco ucr ucs ucu ueb uec uee ueh uei uen uer ues uhb uhc uhe uhh uhi uho uhr uhs uhu uib uic uie uii uin uio uir uis uiu un- unb unc une unh uni unn uno unr uns unu uob uoc uoe uon uoo uor uos ur- urb urc ure uri urn uro urr urs uru usb usc use ush usi usn uso usr uss usu uuc uue uun uur uus uuu