-er -ic b-u bbb bbc bbd bbe bbi bbl bbr bbs bbt bbu bcb bcc bcd bce bci bcl bcr bcs bct bcu bdb bdc bdd bde bdi bdl bdr bds bdt bdu be- beb bec bed bee bei bel ber bes bet beu bi- bib bic bid bie bii bil bir bis bit biu blb blc bld ble bli bll blr bls blt blu brb brd bre bri brl brr brs brt bru bsb bsc bsd bse bsi bsl bsr bss bst bsu btb btc btd bte bti btl btr bts btt btu bub buc bud bue bui bul bur bus but buu c-- cbb cbc cbd cbe cbi cbl cbr cbs cbt cbu ccb ccc ccd cce cci ccl ccr ccs cct ccu cdb cdc cdd cde cdi cdl cdr cds cdt cdu ce- ceb cec ced cee cei cel cer ces cet ceu ci- cib cic cid cie cii cil cir cis cit ciu cl- clb clc cld cle cli cll clr cls clt clu crb crc crd cre cri crl crr crs crt cru csb csc csd cse csi csl csr css cst csu ctb ctc ctd cte cti ctl ctr cts ctt ctu cub cuc cud cue cui cul cur cus cut cuu dbb dbc dbd dbe dbi dbl dbr dbs dbt dbu dcb dcc dcd dce dci dcl dcr dcs dct dcu ddb ddc ddd dde ddi ddl ddr dds ddt ddu de- deb dec ded dee dei del der des det deu di- dib dic did die dii dil dir dis dit diu dl- dlb dlc dld dle dli dll dlr dls dlt dlu drb drc drd dre dri drl drr drs drt dru dsb dsc dsd dse dsi dsl dsr dss dst dsu dtb dtc dtd dte dti dtl dtr dts dtt dtu dub duc dud due dui dul dur dus dut ebb ebc ebd ebe ebi ebl ebr ebs ebt ebu ec- ecb ecc ecd ece eci ecl ecr ecs ect ecu ed- edb edc edd ede edi edl edr eds edt edu eeb eec eed eee eel eer ees eet eib eic eid eie eii eil eir eis eit eiu elb elc eld ele eli ell elr els elt elu erb erc erd ere eri erl err ers ert eru es- esb esc esd ese esi esl esr ess est esu etb etc etd ete eti etl etr ets ett etu eu- eub euc eud eue eui eul eur eus eut i-d ibb ibc ibd ibe ibi ibl ibr ibs ibt ibu icb icc icd ice ici icl icr ics ict icu idb idc idd ide idi idl idr ids idt idu ie- iec ied iee iei iel ier ies iet iib iic iid iie iii iil iir iis iit iiu il- ilb ilc ild ile ili ill ilr ils ilt ilu ir- irb irc ird ire iri irl irr irs irt iru is- isb isc isd ise isi isl isr iss ist isu itb itc itd ite iti itl its itt itu iu- iub iuc iud iue iui iur ius iut lbb lbc lbd lbe lbi lbl lbr lbs lbt lbu lcb lcc lcd lce lci lcl lcr lcs lct lcu ldb ldc ldd lde ldi ldl ldr lds ldt ldu leb lec led lee lei lel ler les let leu lib lic lid lie lii lil lir lis lit liu llb llc lld lle lli lll llr lls llt llu lrb lrc lrd lri lrr lrs lrt lru lsb lsc lsd lse lsi lsl lsr lss lst lsu ltb ltc ltd lte lti ltl ltr lts ltt ltu lub luc lud lue lui lul lur lus lut luu rbb rbc rbd rbe rbi rbl rbr rbs rbt rbu rcb rcc rcd rce rci rcl rcr rcs rct rcu rdb rdc rdd rde rdi rdl rdr rds rdt rdu re- reb rec red ree rei rel rer res ret reu rib ric rid rie rii ril rir ris rit rlc rld rle rli rll rlr rls rlt rlu rrb rrc rrd rri rrl rrr rrs rrt rru rsb rsc rsd rse rsi rsl rsr rss rst rsu rtb rtc rtd rte rti rtl rtr rts rtt rtu rub ruc rud rue rui rur rus rut ruu sbb sbc sbd sbe sbi sbl sbr sbs sbt sbu scb scc scd sce sci scl scr scs sct scu sdb sdc sdd sde sdi sdl sdr sds sdt sdu se- seb sec sed see sei sel ser ses set seu sib sic sid sie sii sil sir sis sit siu slb slc sld sle sli sll slr sls slt slu sr- srb src srd sre sri srl srr srs srt ss- ssb ssc ssd sse ssi ssl ssr sss sst ssu stb stc std ste sti stl str sts stt stu sub suc sud sue sui sul sur sus sut suu tbb tbc tbd tbe tbi tbl tbr tbs tbt tbu tcb tcc tcd tce tci tcl tcr tcs tct tcu tdb tdc tdd tde tdi tdl tdr tds tdt tdu te- teb tec ted tee tei tel ter tes tet teu tib tic tid tie tii til tir tis tit tiu tlc tld tle tli tll tlr tls tlt tlu trb trc trd tre tri trl trr trs trt tru tsb tsc tsd tse tsi tsl tsr tss tst tsu ttb ttc ttd tte tti ttl ttr tts ttt ttu tub tuc tud tue tui tul tur tus tut tuu ubb ubc ube ubi ubl ubr ubs ubt ubu ucb ucc ucd uce uci ucl ucr ucs uct ucu udb udc udd ude udi udl udr uds udt udu ueb uec ued uee uei uel uer ues uet uib uic uid uie uii uil uir uis uit uiu ulb ulc uld ule uli ull ulr uls ult ulu ur- urb urc urd ure uri url urr urs urt uru usb usc usd use usi usl usr uss ust usu utb utc utd ute uti utl utr uts utt utu uuc uue