-er -ic c-- ccc ccd cce cci ccl ccr ccs ccu cdc cdd cde cdi cdl cdr cds cdu ce- cec ced cee cei cel cer ces ceu ci- cic cid cie cii cil cir cis ciu cl- clc cld cle cli cll clr cls clu crc crd cre cri crl crr crs cru csc csd cse csi csl csr css csu cuc cud cue cui cul cur cus cuu dcc dcd dce dci dcl dcr dcs dcu ddc ddd dde ddi ddl ddr dds ddu de- dec ded dee dei del der des deu di- dic did die dii dil dir dis diu dl- dlc dld dle dli dll dlr dls dlu drc drd dre dri drl drr drs dru dsc dsd dse dsi dsl dsr dss dsu duc dud due dui dul dur dus ec- ecc ecd ece eci ecl ecr ecs ecu ed- edc edd ede edi edl edr eds edu eec eed eee eel eer ees eic eid eie eii eil eir eis eiu elc eld ele eli ell elr els elu erc erd ere eri erl err ers eru es- esc esd ese esi esl esr ess esu eu- euc eud eue eui eul eur eus i-d icc icd ice ici icl icr ics icu idc idd ide idi idl idr ids idu ie- iec ied iee iei iel ier ies iic iid iie iii iil iir iis iiu il- ilc ild ile ili ill ilr ils ilu ir- irc ird ire iri irl irr irs iru is- isc isd ise isi isl isr iss isu iu- iuc iud iue iui iur ius lcc lcd lce lci lcl lcr lcs lcu ldc ldd lde ldi ldl ldr lds ldu lec led lee lei lel ler les leu lic lid lie lii lil lir lis liu llc lld lle lli lll llr lls llu lrc lrd lri lrr lrs lru lsc lsd lse lsi lsl lsr lss lsu luc lud lue lui lul lur lus luu rcc rcd rce rci rcl rcr rcs rcu rdc rdd rde rdi rdl rdr rds rdu re- rec red ree rei rel rer res reu ric rid rie rii ril rir ris rlc rld rle rli rll rlr rls rlu rrc rrd rri rrl rrr rrs rru rsc rsd rse rsi rsl rsr rss rsu ruc rud rue rui rur rus ruu scc scd sce sci scl scr scs scu sdc sdd sde sdi sdl sdr sds sdu se- sec sed see sei sel ser ses seu sic sid sie sii sil sir sis siu slc sld sle sli sll slr sls slu sr- src srd sre sri srl srr srs ss- ssc ssd sse ssi ssl ssr sss ssu suc sud sue sui sul sur sus suu ucc ucd uce uci ucl ucr ucs ucu udc udd ude udi udl udr uds udu uec ued uee uei uel uer ues uic uid uie uii uil uir uis uiu ulc uld ule uli ull ulr uls ulu ur- urc urd ure uri url urr urs uru usc usd use usi usl usr uss usu uuc uue uur uus uuu