-er -ic b-u bbb bbc bbd bbe bbi bbl bbr bbs bbu bcb bcc bcd bce bci bcl bcr bcs bcu bdb bdc bdd bde bdi bdl bdr bds bdu be- beb bec bed bee bei bel ber bes beu bi- bib bic bid bie bii bil bir bis biu blb blc bld ble bli bll blr bls blu brb brd bre bri brl brr brs bru bsb bsc bsd bse bsi bsl bsr bss bsu bub buc bud bue bui bul bur bus buu c-- cbb cbc cbd cbe cbi cbl cbr cbs cbu ccb ccc ccd cce cci ccl ccr ccs ccu cdb cdc cdd cde cdi cdl cdr cds cdu ce- ceb cec ced cee cei cel cer ces ceu ci- cib cic cid cie cii cil cir cis ciu cl- clb clc cld cle cli cll clr cls clu crb crc crd cre cri crl crr crs cru csb csc csd cse csi csl csr css csu cub cuc cud cue cui cul cur cus cuu dbb dbc dbd dbe dbi dbl dbr dbs dbu dcb dcc dcd dce dci dcl dcr dcs dcu ddb ddc ddd dde ddi ddl ddr dds ddu de- deb dec ded dee dei del der des deu di- dib dic did die dii dil dir dis diu dl- dlb dlc dld dle dli dll dlr dls dlu drb drc drd dre dri drl drr drs dru dsb dsc dsd dse dsi dsl dsr dss dsu dub duc dud due dui dul dur dus ebb ebc ebd ebe ebi ebl ebr ebs ebu ec- ecb ecc ecd ece eci ecl ecr ecs ecu ed- edb edc edd ede edi edl edr eds edu eeb eec eed eee eel eer ees eib eic eid eie eii eil eir eis eiu elb elc eld ele eli ell elr els elu erb erc erd ere eri erl err ers eru es- esb esc esd ese esi esl esr ess esu eu- eub euc eud eue eui eul eur eus i-d ibb ibc ibd ibe ibi ibl ibr ibs ibu icb icc icd ice ici icl icr ics icu idb idc idd ide idi idl idr ids idu ie- iec ied iee iei iel ier ies iib iic iid iie iii iil iir iis iiu il- ilb ilc ild ile ili ill ilr ils ilu ir- irb irc ird ire iri irl irr irs iru is- isb isc isd ise isi isl isr iss isu iu- iub iuc iud iue iui iur ius lbb lbc lbd lbe lbi lbl lbr lbs lbu lcb lcc lcd lce lci lcl lcr lcs lcu ldb ldc ldd lde ldi ldl ldr lds ldu leb lec led lee lei lel ler les leu lib lic lid lie lii lil lir lis liu llb llc lld lle lli lll llr lls llu lrb lrc lrd lri lrr lrs lru lsb lsc lsd lse lsi lsl lsr lss lsu lub luc lud lue lui lul lur lus luu rbb rbc rbd rbe rbi rbl rbr rbs rbu rcb rcc rcd rce rci rcl rcr rcs rcu rdb rdc rdd rde rdi rdl rdr rds rdu re- reb rec red ree rei rel rer res reu rib ric rid rie rii ril rir ris rlc rld rle rli rll rlr rls rlu rrb rrc rrd rri rrl rrr rrs rru rsb rsc rsd rse rsi rsl rsr rss rsu rub ruc rud rue rui rur rus ruu sbb sbc sbd sbe sbi sbl sbr sbs sbu scb scc scd sce sci scl scr scs scu sdb sdc sdd sde sdi sdl sdr sds sdu se- seb sec sed see sei sel ser ses seu sib sic sid sie sii sil sir sis siu slb slc sld sle sli sll slr sls slu sr- srb src srd sre sri srl srr srs ss- ssb ssc ssd sse ssi ssl ssr sss ssu sub suc sud sue sui sul sur sus suu ubb ubc ube ubi ubl ubr ubs ubu ucb ucc ucd uce uci ucl ucr ucs ucu udb udc udd ude udi udl udr uds udu ueb uec ued uee uei uel uer ues uib uic uid uie uii uil uir uis uiu ulb ulc uld ule uli ull ulr uls ulu ur- urb urc urd ure uri url urr urs uru usb usc usd use usi usl usr uss usu uuc uue uur uus uuu