-er -ic b-u bbb bbc bbe bbg bbi bbo bbr bbs bbt bbu bcb bcc bce bcg bci bco bcr bcs bct bcu bcv be- beb bec bee beg bei beo ber bes bet beu bev bgb bgc bge bgg bgi bgo bgr bgs bgt bgu bgv bi- bib bic bie big bii bio bir bis bit biu biv bob boc boe bog boi boo bor bos bot bou bov brb bre brg bri bro brr brs brt bru brv bsb bsc bse bsg bsi bso bsr bss bst bsu bsv btb btc bte btg bti bto btr bts btt btu btv bub buc bue bug bui buo bur bus but buu bvb bvc bve bvg bvi bvo bvr bvs bvt bvu bvv c-- cbb cbc cbe cbg cbi cbo cbr cbs cbt cbu cbv ccb ccc cce ccg cci cco ccr ccs cct ccu ccv ce- ceb cec cee ceg cei ceo cer ces cet ceu cev cgb cgc cge cgg cgi cgo cgr cgs cgt cgu cgv ci- cib cic cie cig cii cio cir cis cit ciu civ co- cob coc coe cog coi coo cor cos cot cou cov crb crc cre crg cri cro crr crs crt cru crv csb csc cse csg csi cso csr css cst csu csv ctb ctc cte ctg cti cto ctr cts ctt ctu ctv cub cuc cue cug cui cuo cur cus cut cuu cuv cvb cvc cve cvg cvi cvo cvr cvs cvt cvu cvv ebb ebc ebe ebg ebi ebo ebr ebs ebt ebu ebv ec- ecb ecc ece ecg eci eco ecr ecs ect ecu ecv eeb eec eee eeg eeo eer ees eet eev egb egc ege egg egi ego egr egs egt egu eib eic eie eig eii eio eir eis eit eiu eiv eo- eob eoc eoe eog eoi eoo eor eos eot eou erb erc ere erg eri ero err ers ert eru erv es- esb esc ese esg esi eso esr ess est esu esv etb etc ete etg eti eto etr ets ett etu etv eu- eub euc eue eug eui eur eus eut euv evb evc eve evg evi evo evr evs evt evv gbc gbe gbg gbi gbo gbr gbs gbt gbu gbv gcb gcc gce gcg gci gco gcr gcs gct gcu ge- geb gec gee geg gei geo ger ges get geu gev ggb ggc ggg ggi ggo ggr ggs ggt ggu ggv gib gic gie gig gii gio gir gis git giu giv gob goc goe gog goi goo gor gos got gou gov grb grc gre grg gri gro grr grs grt gru grv gsb gsc gse gsg gsi gso gsr gss gst gsu gsv gtb gtc gte gtg gti gto gtr gts gtt gtu gtv gu- gub guc gue gug gui guo gur gus gut guu guv gvb gvc gve gvg gvi gvo gvr gvs gvt gvu i-v ibb ibc ibe ibg ibi ibo ibr ibs ibt ibu ibv icb icc ice icg ici ico icr ics ict icu icv ie- iec iee ieg iei ier ies iet iev igb igc ige igg igi igo igr igs igt igu iib iic iie iii iio iir iis iit iiu io- iob ioc ioe iog ioi ioo ior ios iot iou iov ir- irb irc ire irg iri iro irr irs irt iru irv is- isb isc ise isg isi iso isr iss ist isu isv itb itc ite itg iti ito its itt itu itv iu- iub iuc iue iug iui iur ius iut ivb ivc ive ivg ivi ivo ivr ivs ivt ivu ivv o-i ob- obb obc obe obg obi obo obr obs obt obu obv oc- ocb occ ocg oci oco ocr ocs oct ocu ocv oeb oec oee oeg oei oeo oer oes oet ogc oge ogg ogi ogo ogs ogt oib oic oie oii oio oir ois oit oiu oiv oo- oob ooc oog ooi ooo oor oos oot oov or- orb orc ore org ori oro orr ors ort oru orv os- osb osc ose osg osi oso osr oss ost osu osv ot- otb otc ote otg oti oto otr ots ott otu otv ou- ouc oue oui ouo our ous out ov- ovb ovc ove ovi ovo ovs ovv rbb rbc rbe rbg rbi rbo rbr rbs rbt rbu rcb rcc rce rcg rci rco rcr rcs rct rcu rcv re- reb rec ree reg rei reo rer res ret reu rev rgb rgc rge rgg rgi rgo rgr rgs rgt rgv rib ric rie rig rii rio rir ris rit riv rob roc roe rog roi roo ror ros rot rou rov rrb rrc rrg rri rrr rrs rrt rru rsb rsc rse rsg rsi rso rsr rss rst rsu rsv rtb rtc rte rtg rti rto rtr rts rtt rtu rtv rub ruc rue rug rui ruo rur rus rut ruu ruv rvb rvc rve rvg rvi rvo rvr rvs rvt rvu rvv sbb sbc sbe sbg sbi sbo sbr sbs sbt sbu sbv scb scc sce scg sci sco scr scs sct scu scv se- seb sec see seg sei seo ser ses set seu sev sgb sgc sge sgg sgi sgo sgr sgs sgt sgu sgv sib sic sie sig sii sio sir sis sit siu siv sob soc soe sog soi soo sor sos sot sou sov sr- srb src sre srg sri sro srr srs srt srv ss- ssb ssc sse ssg ssi sso ssr sss sst ssu ssv stb stc ste stg sti sto str sts stt stu stv sub suc sue sug sui suo sur sus sut suu suv svb svc sve svg svi svo svr svs svt svu svv tbb tbc tbe tbg tbi tbo tbr tbs tbt tbu tbv tcb tcc tce tcg tci tco tcr tcs tct tcu tcv te- teb tec tee teg tei teo ter tes tet teu tev tgb tgc tge tgg tgi tgo tgr tgs tgt tgu tgv tib tic