-er b-u bbb bbc bbd bbe bbh bbl bbr bbs bbu bcb bcc bcd bce bch bcl bcr bcs bcu bdb bdc bdd bde bdh bdl bdr bds bdu be- beb bec bed bee beh bel ber bes beu bhb bhc bhd bhe bhh bhl bhr bhs bhu blb blc bld ble blh bll blr bls blu brb brd bre brh brl brr brs bru bsb bsc bsd bse bsh bsl bsr bss bsu bub buc bud bue buh bul bur bus buu c-- cbb cbc cbd cbe cbh cbl cbr cbs cbu ccb ccc ccd cce cch ccl ccr ccs ccu cdb cdc cdd cde cdh cdl cdr cds cdu ce- ceb cec ced cee ceh cel cer ces ceu ch- chb chc chd che chh chl chr chs chu cl- clb clc cld cle clh cll clr cls clu crb crc crd cre crh crl crr crs cru csb csc csd cse csh csl csr css csu cub cuc cud cue cuh cul cur cus cuu dbb dbc dbd dbe dbh dbl dbr dbs dbu dcb dcc dcd dce dcl dcr dcs dcu ddb ddc ddd dde ddh ddl ddr dds ddu de- deb dec ded dee deh del der des deu dh- dhb dhc dhd dhe dhh dhl dhr dhs dhu dl- dlb dlc dld dle dlh dll dlr dls dlu drb drc drd dre drl drr drs dru dsb dsc dsd dse dsh dsl dsr dss dsu dub duc dud due duh dul dur dus ebb ebc ebd ebe ebh ebl ebr ebs ebu ec- ecb ecc ecd ece ech ecl ecr ecs ecu ed- edb edc edd ede edh edl edr eds edu eeb eec eed eee eel eer ees ehb ehc ehd ehe ehh ehl ehr ehs ehu elb elc eld ele elh ell elr els elu erb erc erd ere erh erl err ers eru es- esb esc esd ese esh esl esr ess esu eu- eub euc eud eue eul eur eus hbb hbc hbd hbe hbh hbl hbr hbs hbu hcb hcc hcd hce hch hcl hcr hcs hdb hdc hdd hde hdh hdl hdr hds hdu he- heb hec hed hee heh hel her hes heu hhb hhc hhd hhe hhh hhl hhr hhs hhu hlb hlc hld hle hlh hll hlr hls hlu hr- hrb hrc hrd hre hrh hrl hrr hrs hru hsb hsc hsd hse hsh hsl hsr hss hsu hub huc hud hue huh hul hur hus huu lbb lbc lbd lbe lbh lbl lbr lbs lbu lcb lcc lcd lce lch lcl lcr lcs lcu ldb ldc ldd lde ldh ldl ldr lds ldu leb lec led lee leh lel ler les leu lhb lhc lhd lhh lhr lhs lhu llb llc lld lle lll llr lls llu lrb lrc lrd lrh lrr lrs lru lsb lsc lsd lse lsh lsl lsr lss lsu lub luc lud lue luh lul lur lus luu rbb rbc rbd rbe rbh rbl rbr rbs rbu rcb rcc rcd rce rch rcl rcr rcs rcu rdb rdc rdd rde rdh rdl rdr rds rdu re- reb rec red ree reh rel rer res reu rh- rhb rhc rhd rhe rhh rhl rhr rhs rhu rlc rld rle rlh rll rlr rls rlu rrb rrc rrd rrh rrl rrr rrs rru rsb rsc rsd rse rsh rsl rsr rss rsu rub ruc rud rue ruh rur rus ruu sbb sbc sbd sbe sbh sbl sbr sbs sbu scb scc scd sce sch scl scr scs scu sdb sdc sdd sde sdh sdl sdr sds sdu se- seb sec sed see seh sel ser ses seu sh- shb shc shd she shh shl shr shs shu slb slc sld sle slh sll slr sls slu sr- srb src srd sre srh srl srr srs ss- ssb ssc ssd sse ssh ssl ssr sss ssu sub suc sud sue suh sul sur sus suu ubb ubc ube ubh ubl ubr ubs ubu ucb ucc ucd uce uch ucl ucr ucs ucu udb udc udd ude udl udr uds udu ueb uec ued uee ueh uel uer ues uhb uhc uhd uhe uhh uhl uhr uhs uhu ulb ulc uld ule ull ulr uls ulu ur- urb urc urd ure url urr urs uru usb usc usd use ush usl usr uss usu uuc uue uur uus uuu