-er c-- ccc cce ccf ccl ccr ccs cct ccu ce- cec cee cef cel cer ces cet ceu cfc cfe cff cfl cfr cfs cft cfu cl- clc cle clf cll clr cls clt clu crc cre crf crl crr crs crt cru csc cse csf csl csr css cst csu ctc cte ctf ctl ctr cts ctt ctu cuc cue cuf cul cur cus cut cuu ec- ecc ece ecf ecl ecr ecs ect ecu eec eee eef eel eer ees eet ef- efc efe eff efl efr efs eft elc ele elf ell elr els elt elu erc ere erf erl err ers ert eru es- esc ese esf esl esr ess est esu etc ete etf etl etr ets ett etu eu- euc eue euf eul eur eus eut fcc fce fcf fcl fcr fcs fct fcu fec fee fef fel fer fes fet feu ffc ffe fff ffl ffr ffs fft ffu flc fle flf fll flr fls flt flu frc fre frf frl frr frs frt fru fsc fse fsf fsl fsr fss fst fsu ftc fte ftf ftl ftr fts ftt ftu fue fuf ful fur fus fut fuu lcc lce lcf lcl lcr lcs lct lcu lec lee lef lel ler les let leu lfc lfe lff lfl lfr lfs lft lfu llc lle llf lll llr lls llt llu lrc lrf lrr lrs lrt lru lsc lse lsf lsl lsr lss lst lsu ltc lte ltf ltl ltr lts ltt ltu luc lue luf lul lur lus lut luu rcc rce rcf rcl rcr rcs rct rcu re- rec ree ref rel rer res ret reu rfc rfe rff rfl rfr rfs rft rfu rlc rle rlf rll rlr rls rlt rlu rrc rrf rrl rrr rrs rrt rru rsc rse rsf rsl rsr rss rst rsu rtc rte rtf rtl rtr rts rtt rtu ruc rue ruf rur rus rut ruu scc sce scf scl scr scs sct scu se- sec see sef sel ser ses set seu sfc sfe sff sfl sfr sfs sft sfu slc sle slf sll slr sls slt slu sr- src sre srf srl srr srs srt ss- ssc sse ssf ssl ssr sss sst ssu stc ste stf stl str sts stt stu suc sue suf sul sur sus sut suu tcc tce tcf tcl tcr tcs tct tcu te- tec tee tef tel ter tes tet teu tfc tfe tff tfl tfr tfs tft tfu tlc tle tlf tll tlr tls tlt tlu trc tre trf trl trr trs trt tru tsc tse tsf tsl tsr tss tst tsu ttc tte ttf ttl ttr tts ttt ttu tuc tue tuf tul tur tus tut tuu ucc uce ucf ucl ucr ucs uct ucu uec uee uef uel uer ues uet ufc ufe uff ufl ufr ufs uft ufu ulc ule ulf ull ulr uls ult ulu ur- urc ure urf url urr urs urt uru usc use usf usl usr uss ust usu utc ute utf utl utr uts utt utu uuc uue uur uus uut uuu