-er -th b-u bbb bbc bbd bbe bbh bbl bbr bbt bbu bcb bcc bcd bce bch bcl bcr bct bcu bcv bdb bdc bdd bde bdh bdl bdr bdt bdu bdv be- beb bec bed bee beh bel ber bet beu bev bhb bhc bhd bhe bhh bhl bhr bht bhu bhv blb blc bld ble blh bll blr blt blu blv brb brd bre brh brl brr brt bru brv btb btc btd bte bth btl btr btt btu btv bub buc bud bue buh bul bur but buu bvb bvc bvd bve bvh bvl bvr bvt bvu bvv c-- cbb cbc cbd cbe cbh cbl cbr cbt cbu cbv ccb ccc ccd cce cch ccl ccr cct ccu ccv cdb cdc cdd cde cdh cdl cdr cdt cdu cdv ce- ceb cec ced cee ceh cel cer cet ceu cev ch- chb chc chd che chh chl chr cht chu chv cl- clb clc cld cle clh cll clr clt clu clv crb crc crd cre crh crl crr crt cru crv ctb ctc ctd cte cth ctl ctr ctt ctu ctv cub cuc cud cue cuh cul cur cut cuu cuv cvb cvc cvd cve cvh cvl cvr cvt cvu cvv dbb dbc dbd dbe dbh dbl dbr dbt dbu dbv dcb dcc dcd dce dcl dcr dct dcu dcv ddb ddc ddd dde ddh ddl ddr ddt ddu de- deb dec ded dee deh del der det deu dev dh- dhb dhc dhd dhe dhh dhl dhr dht dhu dl- dlb dlc dld dle dlh dll dlr dlt dlu dlv drb drc drd dre drl drr drt dru drv dtb dtc dtd dte dth dtl dtr dtt dtu dtv dub duc dud due duh dul dur dut duv dvb dvc dvd dve dvh dvl dvr dvt dvu ebb ebc ebd ebe ebh ebl ebr ebt ebu ebv ec- ecb ecc ecd ece ech ecl ecr ect ecu ecv ed- edb edc edd ede edh edl edr edt edu eeb eec eed eee eel eer eet eev ehb ehc ehd ehe ehh ehl ehr eht ehu ehv elb elc eld ele elh ell elr elt elu elv erb erc erd ere erh erl err ert eru erv etb etc etd ete eth etl etr ett etu etv eu- eub euc eud eue eul eur eut euv evb evc evd eve evh evl evr evt evv hbb hbc hbd hbe hbh hbl hbr hbt hbu hbv hcb hcc hcd hce hch hcl hcr hct hcv hdb hdc hdd hde hdh hdl hdr hdt hdu hdv he- heb hec hed hee heh hel her het heu hev hhb hhc hhd hhe hhh hhl hhr hht hhu hhv hlb hlc hld hle hlh hll hlr hlt hlu hlv hr- hrb hrc hrd hre hrh hrl hrr hrt hru hrv htb htc htd hte hth htl htr htt htv hub huc hud hue huh hul hur hut huu huv hv- hvb hvc hvd hvl hvr hvt hvv lbb lbc lbd lbe lbh lbl lbr lbt lbu lbv lcb lcc lcd lce lch lcl lcr lct lcu lcv ldb ldc ldd lde ldh ldl ldr ldt ldu ldv leb lec led lee leh lel ler let leu lev lhb lhc lhd lhh lhr lht lhu lhv llb llc lld lle lll llr llt llu llv lrb lrc lrd lrh lrr lrt lru lrv ltb ltc ltd lte lth ltl ltr ltt ltu ltv lub luc lud lue luh lul lur lut luu luv lvb lvc lvd lve lvh lvl lvr lvt lvv rbb rbc rbd rbe rbh rbl rbr rbt rbu rcb rcc rcd rce rch rcl rcr rct rcu rcv rdb rdc rdd rde rdh rdl rdr rdt rdu rdv re- reb rec red ree reh rel rer ret reu rev rh- rhb rhc rhd rhe rhh rhl rhr rht rhu rhv rlc rld rle rlh rll rlr rlt rlu rrb rrc rrd rrh rrl rrr rrt rru rtb rtc rtd rte rtl rtr rtt rtu rtv rub ruc rud rue ruh rur rut ruu ruv rvb rvc rvd rve rvh rvl rvr rvt rvu rvv tbb tbc tbd tbe tbh tbl tbr tbt tbu tbv tcb tcc tcd tce tch tcl tcr tct tcu tcv tdb tdc tdd tde tdh tdl tdr tdt tdu tdv te- teb tec ted tee teh tel ter tet teu tev th- thb thc thd the thh thl thr tht thu thv tlc tld tle tlh tll tlr tlt tlu tlv trb trc trd tre trh trl trr trt tru trv ttb ttc ttd tte tth ttl ttr ttt ttu ttv tub tuc tud tue tuh tul tur tut tuu tuv tvb tvc tvd tve tvh tvl tvr tvt tvu ubb ubc ube ubh ubl ubr ubt ubu ubv ucb ucc ucd uce uch ucl ucr uct ucu ucv udb udc udd ude udl udr udt udu udv ueb uec ued uee ueh uel uer uet uhb uhc uhd uhe uhh uhl uhr uht uhu uhv ulb ulc uld ule ull ulr ult ulu ulv ur- urb urc urd ure url urr urt uru utb utc utd ute uth utl utr utt utu utv uuc uue uur uut uuu uvb uvc uve uvl uvu uvv v-e vbc vbd vbh vbl vbr vbv vcc vcd vce vch vcl vcr vct vcu vdb vdc vdd vde vdh vdl vdr vdt vdu vdv veb vec ved vee veh vel ver vet veu vh- vhb vhc vhd vhe vht vl- vlb vlc vld vle vll vlt vlv vrb vrc vrd vre vrh vrr vrt vru vtb vtc vte vtl vtr vtt vtu vtv vue vul vur vut vuv vvb vvc vvr vvt vvv

bbbb bbch bbdd bbeb bbet bblb bbrc bcbc bccc bccl bcde bcec bcer bcet bchd bche bcru bctc bcuc bd-r bdbc bddc bddh bdle bebb bebe bech becu bede bedl bedu beeb beed beel beer beet behr beld bele bell belt belu berc berd bere berr bert beru betc bete beth bett betu betv beur