-er -ic b-u bbb bbc bbd bbe bbi bbo bbr bbs bbt bbu bcb bcc bcd bce bci bco bcr bcs bct bcu bcv bdb bdc bdd bde bdi bdo bdr bds bdt bdu bdv be- beb bec bed bee bei beo ber bes bet beu bev bi- bib bic bid bie bii bio bir bis bit biu biv bob boc bod boe boi boo bor bos bot bou bov brb brd bre bri bro brr brs brt bru brv bsb bsc bsd bse bsi bso bsr bss bst bsu bsv btb btc btd bte bti bto btr bts btt btu btv bub buc bud bue bui buo bur bus but buu bvb bvc bvd bve bvi bvo bvr bvs bvt bvu bvv c-- cbb cbc cbd cbe cbi cbo cbr cbs cbt cbu cbv ccb ccc ccd cce cci cco ccr ccs cct ccu ccv cdb cdc cdd cde cdi cdo cdr cds cdt cdu cdv ce- ceb cec ced cee cei ceo cer ces cet ceu cev ci- cib cic cid cie cii cio cir cis cit ciu civ co- cob coc cod coe coi coo cor cos cot cou cov crb crc crd cre cri cro crr crs crt cru crv csb csc csd cse csi cso csr css cst csu csv ctb ctc ctd cte cti cto ctr cts ctt ctu ctv cub cuc cud cue cui cuo cur cus cut cuu cuv cvb cvc cvd cve cvi cvo cvr cvs cvt cvu cvv dbb dbc dbd dbe dbi dbo dbr dbs dbt dbu dbv dcb dcc dcd dce dci dco dcr dcs dct dcu dcv ddb ddc ddd dde ddi ddo ddr dds ddt ddu de- deb dec ded dee dei deo der des det deu dev di- dib dic did die dii dio dir dis dit diu div dob doc dod doe doi doo dor dos dot dou dov drb drc drd dre dri dro drr drs drt dru drv dsb dsc dsd dse dsi dso dsr dss dst dsu dsv dtb dtc dtd dte dti dto dtr dts dtt dtu dtv dub duc dud due dui duo dur dus dut duv dvb dvc dvd dve dvi dvr dvs dvt dvu ebb ebc ebd ebe ebi ebo ebr ebs ebt ebu ebv ec- ecb ecc ecd ece eci eco ecr ecs ect ecu ecv ed- edb edc edd ede edi edo edr eds edt edu eeb eec eed eee eeo eer ees eet eev eib eic eid eie eii eio eir eis eit eiu eiv eo- eob eoc eod eoe eoi eoo eor eos eot eou erb erc erd ere eri ero err ers ert eru erv es- esb esc esd ese esi eso esr ess est esu esv etb etc etd ete eti eto etr ets ett etu etv eu- eub euc eud eue eui eur eus eut euv evb evc evd eve evi evo evr evs evt evv i-d i-v ibb ibc ibd ibe ibi ibo ibr ibs ibt ibu ibv icb icc icd ice ici ico icr ics ict icu icv idb idc idd ide idi ido idr ids idt idu idv ie- iec ied iee iei ier ies iet iev iib iic iid iie iii iio iir iis iit iiu io- iob ioc iod ioe ioi ioo ior ios iot iou iov ir- irb irc ird ire iri iro irr irs irt iru irv is- isb isc isd ise isi iso isr iss ist isu isv itb itc itd ite iti ito its itt itu itv iu- iub iuc iud iue iui iur ius iut ivb ivc ivd ive ivi ivo ivr ivs ivt ivu ivv o-i ob- obb obc obd obe obi obo obr obs obt obu obv oc- ocb occ ocd oci oco ocr ocs oct ocu ocv odb odc odd ode odi odo odr ods odt odu odv oeb oec oed oee oei oeo oer oes oet oib oic oid oie oii oio oir ois oit oiu oiv oo- oob ooc ood ooi ooo oor oos oot oov or- orb orc ord ore ori oro orr ors ort oru orv os- osb osc osd ose osi oso osr oss ost osu osv ot- otb otc otd ote oti oto otr ots ott otu otv ou- ouc oud oue oui ouo our ous out ov- ovb ovc ovd ove ovi ovo ovs ovv rbb rbc rbd rbe rbi rbo rbr rbs rbt rbu rcb rcc rcd rce rci rco rcr rcs rct rcu rcv rdb rdc rdd rde rdi rdo rdr rds rdt rdu rdv re- reb rec red ree rei reo rer res ret reu rev rib ric rid rie rii rio rir ris rit riv rob roc rod roe roi roo ror ros rot rou rov rrb rrc rrd rri rrr rrs rrt rru rsb rsc rsd rse rsi rso rsr rss rst rsu rsv rtb rtc rtd rte rti rto rtr rts rtt rtu rtv rub ruc rud rue rui ruo rur rus rut ruu ruv rvb rvc rvd rve rvi rvo rvr rvs rvt rvu rvv sbb sbc sbd sbe sbi sbo sbr sbs sbt sbu sbv scb scc scd sce sci sco scr scs sct scu scv sdb sdc sdd sde sdi sdo sdr sds sdt sdu sdv se- seb sec sed see sei seo ser ses set seu sev sib sic sid sie sii sio sir sis sit siu siv sob soc sod soe soi soo sor sos sot sou sov sr- srb src srd sre sri sro srr srs srt srv ss- ssb ssc ssd sse ssi sso ssr sss sst ssu ssv stb stc std ste sti sto str sts stt stu stv sub suc sud sue sui suo sur sus sut suu suv svb svc svd sve svi svo svr svs svt svu svv tbb tbc tbd tbe tbi tbo tbr tbs tbt tbu tbv tcb tcc tcd tce tci tco tcr tcs tct tcu tcv tdb tdc tdd tde tdi tdo tdr tds tdt tdu tdv te- teb