-er -ic -th b-u bbb bbc bbd bbe bbh bbi bbr bbs bbt bbu bcb bcc bcd bce bch bci bcr bcs bct bcu bdb bdc bdd bde bdh bdi bdr bds bdt bdu be- beb bec bed bee beh bei ber bes bet beu bhb bhc bhd bhe bhh bhi bhr bhs bht bhu bi- bib bic bid bie bih bii bir bis bit biu brb brd bre brh bri brr brs brt bru bsb bsc bsd bse bsh bsi bsr bss bst bsu btb btc btd bte bth bti btr bts btt btu bub buc bud bue buh bui bur bus but buu c-- cbb cbc cbd cbe cbh cbi cbr cbs cbt cbu ccb ccc ccd cce cch cci ccr ccs cct ccu cdb cdc cdd cde cdh cdi cdr cds cdt cdu ce- ceb cec ced cee ceh cei cer ces cet ceu ch- chb chc chd che chh chi chr chs cht chu ci- cib cic cid cie cih cii cir cis cit ciu crb crc crd cre crh cri crr crs crt cru csb csc csd cse csh csi csr css cst csu ctb ctc ctd cte cth cti ctr cts ctt ctu cub cuc cud cue cuh cui cur cus cut cuu dbb dbc dbd dbe dbh dbi dbr dbs dbt dbu dcb dcc dcd dce dci dcr dcs dct dcu ddb ddc ddd dde ddh ddi ddr dds ddt ddu de- deb dec ded dee deh dei der des det deu dh- dhb dhc dhd dhe dhh dhi dhr dhs dht dhu di- dib dic did die dih dii dir dis dit diu drb drc drd dre dri drr drs drt dru dsb dsc dsd dse dsh dsi dsr dss dst dsu dtb dtc dtd dte dth dti dtr dts dtt dtu dub duc dud due duh dui dur dus dut ebb ebc ebd ebe ebh ebi ebr ebs ebt ebu ec- ecb ecc ecd ece ech eci ecr ecs ect ecu ed- edb edc edd ede edh edi edr eds edt edu eeb eec eed eee eer ees eet ehb ehc ehd ehe ehh ehi ehr ehs eht ehu eib eic eid eie eii eir eis eit eiu erb erc erd ere erh eri err ers ert eru es- esb esc esd ese esh esi esr ess est esu etb etc etd ete eth eti etr ets ett etu eu- eub euc eud eue eui eur eus eut h-i hbb hbc hbd hbe hbh hbi hbr hbs hbt hbu hcb hcc hcd hce hch hci hcr hcs hct hdb hdc hdd hde hdh hdi hdr hds hdt hdu he- heb hec hed hee heh hei her hes het heu hhb hhc hhd hhe hhh hhi hhr hhs hht hhu hib hic hid hie hih hii hir his hit hiu hr- hrb hrc hrd hre hrh hri hrr hrs hrt hru hsb hsc hsd hse hsh hsi hsr hss hst hsu htb htc htd hte hth hti htr hts htt hub huc hud hue huh hui hur hus hut huu i-d ibb ibc ibd ibe ibh ibi ibr ibs ibt ibu icb icc icd ice ich ici icr ics ict icu idb idc idd ide idh idi idr ids idt idu ie- iec ied iee iei ier ies iet ihb ihc ihd ihe ihh ihi ihr ihs iht ihu iib iic iid iie iih iii iir iis iit iiu ir- irb irc ird ire iri irr irs irt iru is- isb isc isd ise ish isi isr iss ist isu itb itc itd ite ith iti its itt itu iu- iub iuc iud iue iui iur ius iut rbb rbc rbd rbe rbh rbi rbr rbs rbt rbu rcb rcc rcd rce rch rci rcr rcs rct rcu rdb rdc rdd rde rdh rdi rdr rds rdt rdu re- reb rec red ree reh rei rer res ret reu rh- rhb rhc rhd rhe rhh rhi rhr rhs rht rhu rib ric rid rie rih rii rir ris rit rrb rrc rrd rrh rri rrr rrs rrt rru rsb rsc rsd rse rsh rsi rsr rss rst rsu rtb rtc rtd rte rti rtr rts rtt rtu rub ruc rud rue ruh rui rur rus rut ruu sbb sbc sbd sbe sbh sbi sbr sbs sbt sbu scb scc scd sce sch sci scr scs sct scu sdb sdc sdd sde sdh sdi sdr sds sdt sdu se- seb sec sed see seh sei ser ses set seu sh- shb shc shd she shh shi shr shs sht shu sib sic sid sie sih sii sir sis sit siu sr- srb src srd sre srh sri srr srs srt ss- ssb ssc ssd sse ssh ssi ssr sss sst ssu stb stc std ste sth sti str sts stt stu sub suc sud sue suh sui sur sus sut suu tbb tbc tbd tbe tbh tbi tbr tbs tbt tbu tcb tcc tcd tce tch tci tcr tcs tct tcu tdb tdc tdd tde tdh tdi tdr tds tdt tdu te- teb tec ted tee teh tei ter tes tet teu th- thb thc thd the thh thi thr ths tht thu tib tic tid tie tih tii tir tis tit tiu trb trc trd tre trh tri trr trs trt tru tsb tsc tsd tse tsh tsi tsr tss tst tsu ttb ttc ttd tte tth tti ttr tts ttt ttu tub tuc tud tue tuh tui tur tus tut tuu ubb ubc ube ubh ubi ubr ubs ubt ubu ucb ucc ucd uce uch uci ucr ucs uct ucu udb udc udd ude udi udr uds udt udu ueb uec ued uee ueh uei uer ues uet uhb uhc uhd uhe uhh uhi uhr uhs uht uhu uib uic uid uie uii uir uis uit uiu ur- urb urc urd ure uri urr urs urt uru usb usc usd use ush usi usr uss ust usu utb utc utd ute uth uti utr uts utt utu uuc uue uur uus