-er bbb bbc bbe bbf bbk bbl bbn bbr bcb bcc bce bcf bck bcl bcn bcr be- beb bec bee bef bek bel ben ber bfb bfc bfe bff bfl bfn bfr bkb bkc bke bkf bkk bkl bkn bkr blb blc ble blf blk bll bln blr bnb bnc bne bnf bnk bnl bnn bnr brb bre brf brk brl brn brr c-- cbb cbc cbe cbf cbk cbl cbn cbr ccb ccc cce ccf cck ccl ccn ccr ce- ceb cec cee cef cek cel cen cer cfb cfc cfe cff cfk cfl cfn cfr ckb ckc cl- clb clc cle clf clk cll cln clr cn- cnb cnc cne cnf cnl cnn cnr crb crc cre crf crk crl crn crr ebb ebc ebe ebf ebk ebl ebn ebr ec- ecb ecc ece ecf eck ecl ecn ecr eeb eec eee eef eek eel een eer ef- efb efc efe eff efl efr ekb ekc eke ekf ekl ekr elb elc ele elf elk ell eln elr en- enb enc ene enf enk enl enn enr erb erc ere erf erk erl ern err fbb fbc fbe fbf fbk fbl fbn fbr fcb fcc fce fcf fck fcl fcn fcr feb fec fee fef fek fel fen fer ffc ffe fff ffk ffl ffn ffr fkb fkc fkf fkk fkl flb flc fle flf fll fln flr fnb fnc fne fnf fnk fnl fnn fnr frb frc fre frf frk frl frn frr kbb kbc kbe kbf kbk kbl kbn kbr kcb kcc kce kck kcl kcn kcr ke- keb kec kee kef kek kel ken ker kfc kff kkb kkc kke kkk kkl kkn kkr kl- klb klc klf klr kn- knc kne knf knk knl knn knr krc krf krk krl krn krr lbb lbc lbe lbf lbk lbl lbr lcb lcc lce lcf lck lcl lcn lcr leb lec lee lef lek lel len ler lfb lfc lfe lff lfk lfl lfn lfr lkb lkl lkr llb llc lle llf llk lll lln llr lnb lnc lne lnk lnl lnn lnr lrb lrc lrf lrk lrn lrr nbb nbc nbe nbf nbk nbl nbn nbr ncb ncc nce ncf nck ncl ncn ncr ne- neb nec nee nef nek nel nen ner nfb nfc nfe nff nfk nfl nfn nfr nkc nke nkf nkk nkn nkr nlb nlc nle nlf nlk nll nln nlr nnb nnc nne nnf nnk nnl nnn nrb nrc nre nrf nrk nrl nrn nrr rbb rbc rbe rbf rbk rbl rbn rbr rcb rcc rce rcf rcl rcn rcr re- reb rec ree ref rek rel ren rer rfb rfc rfe rff rfk rfl rfn rfr rkb rkc rke rkf rkk rlc rle rlf rll rln rlr rnb rnc rnn rnr rrb rrc rrf rrk rrl rrn rrr

-ene bbbb bbeb bbfc bbfn bblb bbrc bcbc bccc bccl bcec bcer bcfc bebb bebe beck beeb beef beek beel been beer befe beff beke bele belk bell bene benk benn berc bere berk bern berr bffl bleb blee blek blfc blkb blrc bner bnrr brcb brce breb brec bree bref brek brel bren brer brfc brkb brrr cbbc cbcc cbce cbcl cbcn cbcr cbec cbee cbef cber cbfb cbfc cbkl cbkn cbkr cblb cblc cbln cbre cbrl cbrn ccbc ccbn cccb cccc cccf cccl ccee ccel ccfc ccff ccfl cclc ccnb ccnc ccne ccnf ccnr ccrc ccre ccrf ccrl cec- cece ceeb ceec ceel cef- cefc cefn ceke cel- celc cele celf cell cen- cene cer- cerc cere cerf cerl cern cfbc cfbn cfbr cfcb cfcf cfcl cfcn cffb cffr cfln cfnb cfnr cfrb cfre cfrn ckbc ckbe ckck ckcl cken cker ckfr cklf ckln cknb cknc ckrc clec clee clef clek cler cnbc cnbl cnel cnrc cnrr crbc crcc crce crcr cre- creb crec cree cren crfc crfl crkc crkl crlf crne e-cl ebbc ebbr ebcc ebel eben eber ebfc ecbc ecbe eccb eccc ecce eccl ecef ecfc ecfr ecne ecrc ecrf ecrl ecrr eeee eefe eefl eefn eeke eele eerc efbr efen efke ekeb ekek eken eker ekfc ekne el-b elbe elcb elce elec elee elef elek elen eler elfc elfe elke elle elne enb- enbn enbr ence encl enee enel ener enfb enke enkr ennc enne erbb erbe ercc erce ereb erec erel eren erer erfc erke erle erll erne errc erre f--k fble fccf fcnl fece feck feeb feek feel feen feer fefc fefe feff feke fele felf felk fell fene fenk fenn ferb ferc fere ferk fern ferr ffcc ffee ffff ffrr flcl flee flen fler flnb flnc fnlc frbc frcc frcn free fren frfc kbbb kbbc kbbe kbbf kbbk kbbl kbbr kbcb kbce kbck kbcl kbcr kbeb kbec kbee kbef kbek kbel kben kber kbfb kbfc kbff kbfk kbfl kbfr kbkb kbkf kbkk kbkl kbkr kblb kble kblf kbll kblr kbnl kbnn kbnr kbrb kbrc kbre kbrf kbrk kbrl kbrn kcbc kcbf kcbk kcbl kcbr kccb kccc kcck kccl kccr kceb kcec kcee kcel kcfb kcfc kcfl kcfn kckc kckf kckk kckl kckn kckr kclc kcle kclf kclk kcll kcln kclr kcnb kcnr kcrc kcrn kcrr kebb kebc kebe kebn kebr keck kecr keef keek keel keen keer kefb kefc keff kefr kekb kekc keke kekl kele kelf kelk kell keln ken- kene kenk kenl kenn kenr ker- kerb kerc kere kerf kerk kerl kern kerr kfbc kfbk kfbn kfcf kfcr kfeb kfel kfer kffb kfff kffk kffn kfkb kflb kflc kflf kfll kfln kfnc kfnf kfnk kfnl kfnn kfrc kfre kfrn kfrr kkbb kkbe kkbl kkbn kkbr kkcb kkck kkcl kkcn kkcr kken kkfn kkfr kkkk kklb kklc kklf kkll kkln kknb kkne kknn kkrb kkrc kkre kkrf kkrk kkrl kkrn kkrr klbb klbc klbe klbf klbl klbn klcb klcc klce klck klcl klcn klcr kleb klec klee klef klek klen kler klfc klfe klff klfn klkc klkk klkl klkn klkr kllb kllc klle kllk klnc klne klnn klrc klrf klrk klrn klrr knbb knbc knbe knbn knbr kncb knce knck kncn