-er -ic bbb bbc bbe bbf bbg bbi bbk bbl bbn bbr bbs bbt bcb bcc bce bcf bcg bci bck bcl bcn bcr bcs bct be- beb bec bee bef beg bei bek bel ben ber bes bet bfb bfc bfe bff bfg bfi bfl bfn bfr bfs bft bgb bgc bge bgf bgg bgi bgk bgl bgn bgr bgs bgt bi- bib bic bie bif big bii bik bil bin bir bis bit bkb bkc bke bkf bkg bkk bkl bkn bkr bks bkt blb blc ble blf blg bli blk bll bln blr bls blt bnb bnc bne bnf bng bni bnk bnl bnn bnr bns bnt brb bre brf brg bri brk brl brn brr brs brt bsb bsc bse bsf bsg bsi bsk bsl bsn bsr bss bst btb btc bte btf btg bti btk btl btn btr bts btt c-- cbb cbc cbe cbf cbg cbi cbk cbl cbn cbr cbs cbt ccb ccc cce ccf ccg cci cck ccl ccn ccr ccs cct ce- ceb cec cee cef ceg cei cek cel cen cer ces cet cfb cfc cfe cff cfg cfi cfk cfl cfn cfr cfs cft cgb cgc cge cgg cgi cgl cgn cgr cgs cgt ci- cib cic cie cif cig cii cik cil cin cir cis cit ckb ckc cki cks ckt cl- clb clc cle clf clg cli clk cll cln clr cls clt cn- cnb cnc cne cnf cng cni cnl cnn cnr cns cnt crb crc cre crf crg cri crk crl crn crr crs crt csb csc cse csf csg csi csk csl csn csr css cst ctb ctc cte ctf ctg cti ctk ctl ctn ctr cts ctt ebb ebc ebe ebf ebg ebi ebk ebl ebn ebr ebs ebt ec- ecb ecc ece ecf ecg eci eck ecl ecn ecr ecs ect eeb eec eee eef eeg eek eel een eer ees eet ef- efb efc efe eff efg efi efl efr efs eft egb egc ege egf egg egi egl egn egr egs egt eib eic eie eif eig eii eik eil ein eir eis eit ekb ekc eke ekf ekg eki ekl ekr eks ekt elb elc ele elf elg eli elk ell eln elr els elt en- enb enc ene enf eng eni enk enl enn enr ens ent erb erc ere erf erg eri erk erl ern err ers ert es- esb esc ese esf esg esi esk esl esn esr ess est etb etc ete etf etg eti etk etl etn etr ets ett fbb fbc fbe fbf fbg fbi fbk fbl fbn fbr fbs fbt fcb fcc fce fcf fcg fci fck fcl fcn fcr fcs fct feb fec fee fef feg fei fek fel fen fer fes fet ffc ffe fff ffg ffi ffk ffl ffn ffr ffs fft fgb fgc fge fgf fgg fgi fgl fgn fgr fgs fgt fib fic fie fif fig fii fik fil fin fir fis fit fkb fkc fkf fkg fki fkk fkl fkt flb flc fle flf flg fli fll fln flr fls flt fnb fnc fne fnf fng fni fnk fnl fnn fnr fns fnt frb frc fre frf frg fri frk frl frn frr frs frt fsb fsc fse fsf fsg fsi fsk fsl fsn fsr fss fst ftb ftc fte ftf ftg fti ftk ftl ftn ftr fts ftt gbc gbe gbf gbg gbi gbk gbl gbn gbr gbs gbt gcb gcc gce gcf gcg gci gck gcl gcn gcr gcs gct ge- geb gec gee gef geg gei gek gel gen ger ges get gfb gfc gfe gff gfi gfk gfl gfr gfs gft ggb ggc ggg ggi ggn ggr ggs ggt gib gic gie gif gig gii gik gil gin gir gis git gkb gkn gks gkt glb glc gle glf glg gli glk gll gln glr gls glt gnb gnc gne gnf gni gnl gnn gnr gns gnt grb grc gre grf grg gri grk grl grn grr grs grt gsb gsc gse gsf gsg gsi gsk gsl gsn gsr gss gst gtb gtc gte gtf gtg gti gtk gtl gtn gtr gts gtt i-f ibb ibc ibe ibf ibg ibi ibk ibl ibn ibr ibs ibt icb icc ice icf icg ici ick icl icn icr ics ict ie- iec iee ief ieg iei iek iel ien ier ies iet ifb ifc ife iff ifg ifi ifl ifn ifr ifs ift igb igc ige igf igg igi igk igl ign igr igs igt iib iic iie iif iii iil iin iir iis iit ikb ikc ike ikf iki ikk ikl ikr iks ikt il- ilb ilc ile ilf ilg ili ilk ill iln ilr ils ilt in- inb inc ine inf ing ini ink inl inn inr ins int ir- irb irc ire irf irg iri irk irl irn irr irs irt is- isb isc ise isf isg isi isk isl isn isr iss ist itb itc ite itf itg iti itk itl itn its itt k-t kbb kbc kbe kbf kbi kbk kbl kbn kbr kbs kcb kcc kce kcg kci kck kcl kcn kcr kcs kct ke- keb kec kee kef keg kei kek kel ken ker kes ket kfc kff kfg kfi kfs kgb kgc kgf kgi kgl kgs kib kic kie kif kig kii kik kil kin kir kis kit kkb kkc kke kki kkk kkl kkn kkr kks kkt kl- klb klc klf klg kli klr kls klt kn- knc kne knf kng kni knk knl knn knr knt krc krf krg kri krk krl krn krr krs krt ksb ksc kse ksf ksg ksi ksk ksl ksn ksr kss kst ktb ktc kte ktf ktg ktk ktl ktn ktr kts ktt lbb lbc lbe lbf lbg lbi lbk lbl lbr lbs lbt lcb lcc lce lcf lcg lci lck lcl lcn lcr lcs lct leb lec lee lef leg lei lek lel len ler les let lfb lfc lfe lff lfg lfi lfk lfl lfn lfr