-er -ic b-u bbb bbc bbd bbe bbi bbk bbl bbr bbs bbu bcb bcc bcd bce bci bck bcl bcr bcs bcu bdb bdc bdd bde bdi bdk bdl bdr bds bdu be- beb bec bed bee bei bek bel ber bes beu bi- bib bic bid bie bii bik bil bir bis biu bkb bkc bke bkk bkl bkr bks blb blc bld ble bli blk bll blr bls blu brb brd bre bri brk brl brr brs bru bsb bsc bsd bse bsi bsk bsl bsr bss bsu bub buc bud bue bui buk bul bur bus buu c-- cbb cbc cbd cbe cbi cbk cbl cbr cbs cbu ccb ccc ccd cce cci cck ccl ccr ccs ccu cdb cdc cdd cde cdi cdk cdl cdr cds cdu ce- ceb cec ced cee cei cek cel cer ces ceu ci- cib cic cid cie cii cik cil cir cis ciu ckb ckc ckd cki cks cl- clb clc cld cle cli clk cll clr cls clu crb crc crd cre cri crk crl crr crs cru csb csc csd cse csi csk csl csr css csu cub cuc cud cue cui cuk cul cur cus cuu dbb dbc dbd dbe dbi dbk dbl dbr dbs dbu dcb dcc dcd dce dci dck dcl dcr dcs dcu ddb ddc ddd dde ddi ddk ddl ddr dds ddu de- deb dec ded dee dei dek del der des deu di- dib dic did die dii dik dil dir dis diu dkb dkc dke dki dkk dkl dkr dks dku dl- dlb dlc dld dle dli dlk dll dlr dls dlu drb drc drd dre dri drk drl drr drs dru dsb dsc dsd dse dsi dsk dsl dsr dss dsu dub duc dud due dui duk dul dur dus ebb ebc ebd ebe ebi ebk ebl ebr ebs ebu ec- ecb ecc ecd ece eci eck ecl ecr ecs ecu ed- edb edc edd ede edi edk edl edr eds edu eeb eec eed eee eek eel eer ees eib eic eid eie eii eik eil eir eis eiu ekb ekc ekd eke eki ekl ekr eks eku elb elc eld ele eli elk ell elr els elu erb erc erd ere eri erk erl err ers eru es- esb esc esd ese esi esk esl esr ess esu eu- eub euc eud eue eui eul eur eus i-d ibb ibc ibd ibe ibi ibk ibl ibr ibs ibu icb icc icd ice ici ick icl icr ics icu idb idc idd ide idi idk idl idr ids idu ie- iec ied iee iei iek iel ier ies iib iic iid iie iii iil iir iis iiu ikb ikc ike iki ikk ikl ikr iks iku il- ilb ilc ild ile ili ilk ill ilr ils ilu ir- irb irc ird ire iri irk irl irr irs iru is- isb isc isd ise isi isk isl isr iss isu iu- iub iuc iud iue iui iur ius kbb kbc kbd kbe kbi kbk kbl kbr kbs kbu kcb kcc kcd kce kci kck kcl kcr kcs kcu kdb kdc kde kdk kdl kdr kds kdu ke- keb kec ked kee kei kek kel ker kes kib kic kid kie kii kik kil kir kis kiu kkb kkc kke kki kkk kkl kkr kks kku kl- klb klc kld kli klr kls klu krc krd kri krk krl krr krs kru ksb ksc ksd kse ksi ksk ksl ksr kss ksu kub kuc kud kue kui kuk kul kur kus kuu lbb lbc lbd lbe lbi lbk lbl lbr lbs lbu lcb lcc lcd lce lci lck lcl lcr lcs lcu ldb ldc ldd lde ldi ldk ldl ldr lds ldu leb lec led lee lei lek lel ler les leu lib lic lid lie lii lik lil lir lis liu lkb lkl lkr lks llb llc lld lle lli llk lll llr lls llu lrb lrc lrd lri lrk lrr lrs lru lsb lsc lsd lse lsi lsk lsl lsr lss lsu lub luc lud lue lui luk lul lur lus luu rbb rbc rbd rbe rbi rbk rbl rbr rbs rbu rcb rcc rcd rce rci rcl rcr rcs rcu rdb rdc rdd rde rdi rdl rdr rds rdu re- reb rec red ree rei rek rel rer res reu rib ric rid rie rii rik ril rir ris rkb rkc rke rkk rks rku rlc rld rle rli rll rlr rls rlu rrb rrc rrd rri rrk rrl rrr rrs rru rsb rsc rsd rse rsi rsk rsl rsr rss rsu rub ruc rud rue rui ruk rur rus ruu sbb sbc sbd sbe sbi sbk sbl sbr sbs sbu scb scc scd sce sci sck scl scr scs scu sdb sdc sdd sde sdi sdk sdl sdr sds sdu se- seb sec sed see sei sek sel ser ses seu sib sic sid sie sii sik sil sir sis siu sk- skb skc skd ske ski skk skl skr sks sku slb slc sld sle sli slk sll slr sls slu sr- srb src srd sre sri srk srl srr srs ss- ssb ssc ssd sse ssi ssk ssl ssr sss ssu sub suc sud sue sui suk sul sur sus suu ubb ubc ube ubi ubk ubl ubr ubs ubu ucb ucc ucd uce uci uck ucl ucr ucs ucu udb udc udd ude udi udk udl udr uds udu ueb uec ued uee uei uel uer ues uib uic uid uie uii uil uir uis uiu ukb ukc uke uki ukk ukl ukr uku ulb ulc uld ule uli ulk ull ulr uls ulu ur- urb urc urd ure uri urk url urr urs uru usb usc usd use usi usk usl usr uss usu uuc uue uur uus uuu

bbbb bbbs bbci bbdd bbeb bblb bbls bbrc bcbc bcbs bccc bcci bccl bccs bcde bcds bcec bcer bces bcie bcis bcrs bcru bcsc bcsl bcss bcuc bd-r bdbc bddc bdes bdii bdle