-er b-u bbb bbc bbd bbe bbg bbh bbr bbu bcb bcc bcd bce bcg bch bcr bcu bdb bdc bdd bde bdg bdh bdr bdu be- beb bec bed bee beg beh ber beu bgb bgc bgd bge bgg bgh bgr bgu bhb bhc bhd bhe bhg bhh bhr bhu brb brd bre brg brh brr bru bub buc bud bue bug buh bur buu c-- cbb cbc cbd cbe cbg cbh cbr cbu ccb ccc ccd cce ccg cch ccr ccu cdb cdc cdd cde cdg cdh cdr cdu ce- ceb cec ced cee ceg ceh cer ceu cgb cgc cgd cge cgg cgh cgr cgu ch- chb chc chd che chg chh chr chu crb crc crd cre crg crh crr cru cub cuc cud cue cug cuh cur cuu dbb dbc dbd dbe dbg dbh dbr dbu dcb dcc dcd dce dcg dcr dcu ddb ddc ddd dde ddg ddh ddr ddu de- deb dec ded dee deg deh der deu dgc dgd dge dgg dgh dgr dgu dh- dhb dhc dhd dhe dhh dhr dhu drb drc drd dre drg drr dru dub duc dud due dug duh dur ebb ebc ebd ebe ebg ebh ebr ebu ec- ecb ecc ecd ece ecg ech ecr ecu ed- edb edc edd ede edg edh edr edu eeb eec eed eee eeg eer egb egc egd ege egg egh egr egu ehb ehc ehd ehe ehg ehh ehr ehu erb erc erd ere erg erh err eru eu- eub euc eud eue eug eur g-d gbc gbd gbe gbg gbh gbr gbu gcb gcc gcd gce gcg gch gcr gcu gdb gdc gdd gde gdh gdr gdu ge- geb gec ged gee geg geh ger geu ggb ggc ggd ggg ggh ggr ggu ghb ghc ghd ghe ghg ghh ghr grb grc grd gre grg grh grr gru gu- gub guc gud gue gug gur guu hbb hbc hbd hbe hbg hbh hbr hbu hcb hcc hcd hce hcg hch hcr hdb hdc hdd hde hdg hdh hdr hdu he- heb hec hed hee heg heh her heu hgb hgc hge hgg hgh hgr hgu hhb hhc hhd hhe hhg hhh hhr hhu hr- hrb hrc hrd hre hrg hrh hrr hru hub huc hud hue hug huh hur huu rbb rbc rbd rbe rbg rbh rbr rbu rcb rcc rcd rce rcg rch rcr rcu rdb rdc rdd rde rdg rdh rdr rdu re- reb rec red ree reg reh rer reu rgb rgc rgd rge rgg rgh rgr rh- rhb rhc rhd rhe rhg rhh rhr rhu rrb rrc rrd rrg rrh rrr rru rub ruc rud rue rug ruh rur ruu ubb ubc ube ubg ubh ubr ubu ucb ucc ucd uce ucg uch ucr ucu udb udc udd ude udg udr udu ueb uec ued uee ueg ueh uer ugb ugc uge ugg ugh ugr ugu uhb uhc uhd uhe uhh uhr uhu ur- urb urc urd ure urg urr uru uuc uue uug uur uuu