-er c-- ccc cce ccf cck ccl ccr ccs cct ccu ce- cec cee cef cek cel cer ces cet ceu cfc cfe cff cfk cfl cfr cfs cft cfu ckc cks ckt cl- clc cle clf clk cll clr cls clt clu crc cre crf crk crl crr crs crt cru csc cse csf csk csl csr css cst csu ctc cte ctf ctk ctl ctr cts ctt ctu cuc cue cuf cuk cul cur cus cut cuu ec- ecc ece ecf eck ecl ecr ecs ect ecu eec eee eef eek eel eer ees eet ef- efc efe eff efl efr efs eft ekc eke ekf ekl ekr eks ekt eku elc ele elf elk ell elr els elt elu erc ere erf erk erl err ers ert eru es- esc ese esf esk esl esr ess est esu etc ete etf etk etl etr ets ett etu eu- euc eue euf eul eur eus eut fcc fce fcf fck fcl fcr fcs fct fcu fec fee fef fek fel fer fes fet feu ffc ffe fff ffk ffl ffr ffs fft ffu fkc fkf fkk fkl fkt flc fle flf fll flr fls flt flu frc fre frf frk frl frr frs frt fru fsc fse fsf fsk fsl fsr fss fst fsu ftc fte ftf ftk ftl ftr fts ftt ftu fue fuf fuk ful fur fus fut fuu k-t kcc kce kck kcl kcr kcs kct kcu ke- kec kee kef kek kel ker kes ket kfc kff kfs kfu kkc kke kkk kkl kkr kks kkt kku kl- klc klf klr kls klt klu krc krf krk krl krr krs krt kru ksc kse ksf ksk ksl ksr kss kst ksu ktc kte ktf ktk ktl ktr kts ktt ktu kuc kue kuk kul kur kus kut kuu lcc lce lcf lck lcl lcr lcs lct lcu lec lee lef lek lel ler les let leu lfc lfe lff lfk lfl lfr lfs lft lfu lkl lkr lks lkt llc lle llf llk lll llr lls llt llu lrc lrf lrk lrr lrs lrt lru lsc lse lsf lsk lsl lsr lss lst lsu ltc lte ltf ltk ltl ltr lts ltt ltu luc lue luf luk lul lur lus lut luu rcc rce rcf rcl rcr rcs rct rcu re- rec ree ref rek rel rer res ret reu rfc rfe rff rfk rfl rfr rfs rft rfu rkc rke rkf rkk rks rkt rku rlc rle rlf rll rlr rls rlt rlu rrc rrf rrk rrl rrr rrs rrt rru rsc rse rsf rsk rsl rsr rss rst rsu rtc rte rtf rtk rtl rtr rts rtt rtu ruc rue ruf ruk rur rus rut ruu scc sce scf sck scl scr scs sct scu se- sec see sef sek sel ser ses set seu sfc sfe sff sfk sfl sfr sfs sft sfu sk- skc ske skf skk skl skr sks skt sku slc sle slf slk sll slr sls slt slu sr- src sre srf srk srl srr srs srt ss- ssc sse ssf ssk ssl ssr sss sst ssu stc ste stf stk stl str sts stt stu suc sue suf suk sul sur sus sut suu tcc tce tcf tck tcl tcr tcs tct tcu te- tec tee tef tek tel ter tes tet teu tfc tfe tff tfk tfl tfr tfs tft tfu tkc tke tkk tkl tkr tks tkt tlc tle tlf tlk tll tlr tls tlt tlu trc tre trf trk trl trr trs trt tru tsc tse tsf tsk tsl tsr tss tst tsu ttc tte ttf ttk ttl ttr tts ttt ttu tuc tue tuf tuk tul tur tus tut tuu ucc uce ucf uck ucl ucr ucs uct ucu uec uee uef uel uer ues uet ufc ufe uff ufl ufr ufs uft ufu ukc uke ukf ukk ukl ukr uku ulc ule ulf ulk ull ulr uls ult ulu ur- urc ure urf urk url urr urs urt uru usc use usf usk usl usr uss ust usu utc ute utf utk utl utr uts utt utu uuc uue uur uus uut uuu