-er c-- ccc ccd cce ccl ccr ccs cct ccu cdc cdd cde cdl cdr cds cdt cdu ce- cec ced cee cel cer ces cet ceu cl- clc cld cle cll clr cls clt clu crc crd cre crl crr crs crt cru csc csd cse csl csr css cst csu ctc ctd cte ctl ctr cts ctt ctu cuc cud cue cul cur cus cut cuu dcc dcd dce dcl dcr dcs dct dcu ddc ddd dde ddl ddr dds ddt ddu de- dec ded dee del der des det deu dl- dlc dld dle dll dlr dls dlt dlu drc drd dre drl drr drs drt dru dsc dsd dse dsl dsr dss dst dsu dtc dtd dte dtl dtr dts dtt dtu duc dud due dul dur dus dut ec- ecc ecd ece ecl ecr ecs ect ecu ed- edc edd ede edl edr eds edt edu eec eed eee eel eer ees eet elc eld ele ell elr els elt elu erc erd ere erl err ers ert eru es- esc esd ese esl esr ess est esu etc etd ete etl etr ets ett etu eu- euc eud eue eul eur eus eut lcc lcd lce lcl lcr lcs lct lcu ldc ldd lde ldl ldr lds ldt ldu lec led lee lel ler les let leu llc lld lle lll llr lls llt llu lrc lrd lrr lrs lrt lru lsc lsd lse lsl lsr lss lst lsu ltc ltd lte ltl ltr lts ltt ltu luc lud lue lul lur lus lut luu rcc rcd rce rcl rcr rcs rct rcu rdc rdd rde rdl rdr rds rdt rdu re- rec red ree rel rer res ret reu rlc rld rle rll rlr rls rlt rlu rrc rrd rrl rrr rrs rrt rru rsc rsd rse rsl rsr rss rst rsu rtc rtd rte rtl rtr rts rtt rtu ruc rud rue rur rus rut ruu scc scd sce scl scr scs sct scu sdc sdd sde sdl sdr sds sdt sdu se- sec sed see sel ser ses set seu slc sld sle sll slr sls slt slu sr- src srd sre srl srr srs srt ss- ssc ssd sse ssl ssr sss sst ssu stc std ste stl str sts stt stu suc sud sue sul sur sus sut suu tcc tcd tce tcl tcr tcs tct tcu tdc tdd tde tdl tdr tds tdt tdu te- tec ted tee tel ter tes tet teu tlc tld tle tll tlr tls tlt tlu trc trd tre trl trr trs trt tru tsc tsd tse tsl tsr tss tst tsu ttc ttd tte ttl ttr tts ttt ttu tuc tud tue tul tur tus tut tuu ucc ucd uce ucl ucr ucs uct ucu udc udd ude udl udr uds udt udu uec ued uee uel uer ues uet ulc uld ule ull ulr uls ult ulu ur- urc urd ure url urr urs urt uru usc usd use usl usr uss ust usu utc utd ute utl utr uts utt utu uuc uue uur uus uut uuu