-er -ic b-u bbb bbc bbd bbe bbg bbi bbr bbt bbu bcb bcc bcd bce bcg bci bcr bct bcu bdb bdc bdd bde bdg bdi bdr bdt bdu be- beb bec bed bee beg bei ber bet beu bgb bgc bgd bge bgg bgi bgr bgt bgu bi- bib bic bid bie big bii bir bit biu brb brd bre brg bri brr brt bru btb btc btd bte btg bti btr btt btu bub buc bud bue bug bui bur but buu c-- cbb cbc cbd cbe cbg cbi cbr cbt cbu ccb ccc ccd cce ccg cci ccr cct ccu cdb cdc cdd cde cdg cdi cdr cdt cdu ce- ceb cec ced cee ceg cei cer cet ceu cgb cgc cgd cge cgg cgi cgr cgt cgu ci- cib cic cid cie cig cii cir cit ciu crb crc crd cre crg cri crr crt cru ctb ctc ctd cte ctg cti ctr ctt ctu cub cuc cud cue cug cui cur cut cuu dbb dbc dbd dbe dbg dbi dbr dbt dbu dcb dcc dcd dce dcg dci dcr dct dcu ddb ddc ddd dde ddg ddi ddr ddt ddu de- deb dec ded dee deg dei der det deu dgc dgd dge dgg dgi dgr dgt dgu di- dib dic did die dig dii dir dit diu drb drc drd dre drg dri drr drt dru dtb dtc dtd dte dtg dti dtr dtt dtu dub duc dud due dug dui dur dut ebb ebc ebd ebe ebg ebi ebr ebt ebu ec- ecb ecc ecd ece ecg eci ecr ect ecu ed- edb edc edd ede edg edi edr edt edu eeb eec eed eee eeg eer eet egb egc egd ege egg egi egr egt egu eib eic eid eie eig eii eir eit eiu erb erc erd ere erg eri err ert eru etb etc etd ete etg eti etr ett etu eu- eub euc eud eue eug eui eur eut g-d gbc gbd gbe gbg gbi gbr gbt gbu gcb gcc gcd gce gcg gci gcr gct gcu gdb gdc gdd gde gdi gdr gdt gdu ge- geb gec ged gee geg gei ger get geu ggb ggc ggd ggg ggi ggr ggt ggu gib gic gid gie gig gii gir git giu grb grc grd gre grg gri grr grt gru gtb gtc gtd gte gtg gti gtr gtt gtu gu- gub guc gud gue gug gui gur gut guu i-d ibb ibc ibd ibe ibg ibi ibr ibt ibu icb icc icd ice icg ici icr ict icu idb idc idd ide idg idi idr idt idu ie- iec ied iee ieg iei ier iet igb igc igd ige igg igi igr igt igu iib iic iid iie iii iir iit iiu ir- irb irc ird ire irg iri irr irt iru itb itc itd ite itg iti itt itu iu- iub iuc iud iue iug iui iur iut rbb rbc rbd rbe rbg rbi rbr rbt rbu rcb rcc rcd rce rcg rci rcr rct rcu rdb rdc rdd rde rdg rdi rdr rdt rdu re- reb rec red ree reg rei rer ret reu rgb rgc rgd rge rgg rgi rgr rgt rib ric rid rie rig rii rir rit rrb rrc rrd rrg rri rrr rrt rru rtb rtc rtd rte rtg rti rtr rtt rtu rub ruc rud rue rug rui rur rut ruu tbb tbc tbd tbe tbg tbi tbr tbt tbu tcb tcc tcd tce tcg tci tcr tct tcu tdb tdc tdd tde tdg tdi tdr tdt tdu te- teb tec ted tee teg tei ter tet teu tgb tgc tge tgg tgi tgr tgt tgu tib tic tid tie tig tii tir tit tiu trb trc trd tre trg tri trr trt tru ttb ttc ttd tte ttg tti ttr ttt ttu tub tuc tud tue tug tui tur tut tuu ubb ubc ube ubg ubi ubr ubt ubu ucb ucc ucd uce ucg uci ucr uct ucu udb udc udd ude udg udi udr udt udu ueb uec ued uee ueg uei uer uet ugb ugc uge ugg ugi ugr ugt ugu uib uic uid uie uig uii uir uit uiu ur- urb urc urd ure urg uri urr urt uru utb utc utd ute uti utr utt utu uuc uue uug uur uut uuu