-er b-u bbb bbc bbd bbe bbf bbk bbl bbn bbr bbs bbt bbu bcb bcc bcd bce bcf bck bcl bcn bcr bcs bct bcu bdb bdc bdd bde bdf bdk bdl bdr bds bdt bdu be- beb bec bed bee bef bek bel ben ber bes bet beu bfb bfc bfd bfe bff bfl bfn bfr bfs bft bfu bkb bkc bke bkf bkk bkl bkn bkr bks bkt blb blc bld ble blf blk bll bln blr bls blt blu bnb bnc bnd bne bnf bnk bnl bnn bnr bns bnt bnu brb brd bre brf brk brl brn brr brs brt bru bsb bsc bsd bse bsf bsk bsl bsn bsr bss bst bsu btb btc btd bte btf btk btl btn btr bts btt btu bub buc bud bue buf buk bul bun bur bus but buu c-- cbb cbc cbd cbe cbf cbk cbl cbn cbr cbs cbt cbu ccb ccc ccd cce ccf cck ccl ccn ccr ccs cct ccu cdb cdc cdd cde cdf cdk cdl cdn cdr cds cdt cdu ce- ceb cec ced cee cef cek cel cen cer ces cet ceu cfb cfc cfd cfe cff cfk cfl cfn cfr cfs cft cfu ckb ckc ckd cks ckt cl- clb clc cld cle clf clk cll cln clr cls clt clu cn- cnb cnc cnd cne cnf cnl cnn cnr cns cnt cnu crb crc crd cre crf crk crl crn crr crs crt cru csb csc csd cse csf csk csl csn csr css cst csu ctb ctc ctd cte ctf ctk ctl ctn ctr cts ctt ctu cub cuc cud cue cuf cuk cul cun cur cus cut cuu dbb dbc dbd dbe dbf dbk dbl dbn dbr dbs dbt dbu dcb dcc dcd dce dcf dck dcl dcn dcr dcs dct dcu ddb ddc ddd dde ddf ddk ddl ddn ddr dds ddt ddu de- deb dec ded dee def dek del den der des det deu dfb dfc dfd dfe dff dfk dfl dfn dfr dfs dft dfu dkb dkc dke dkk dkl dkr dks dkt dku dl- dlb dlc dld dle dlf dlk dll dlr dls dlt dlu dnb dnc dnd dne dnf dnk dnl dnn dnr dns dnt drb drc drd dre drk drl drn drr drs drt dru dsb dsc dsd dse dsf dsk dsl dsn dsr dss dst dsu dtb dtc dtd dte dtf dtk dtl dtn dtr dts dtt dtu dub duc dud due duf duk dul dun dur dus dut ebb ebc ebd ebe ebf ebk ebl ebn ebr ebs ebt ebu ec- ecb ecc ecd ece ecf eck ecl ecn ecr ecs ect ecu ed- edb edc edd ede edf edk edl edn edr eds edt edu eeb eec eed eee eef eek eel een eer ees eet ef- efb efc efd efe eff efl efr efs eft ekb ekc ekd eke ekf ekl ekr eks ekt eku elb elc eld ele elf elk ell eln elr els elt elu en- enb enc end ene enf enk enl enn enr ens ent enu erb erc erd ere erf erk erl ern err ers ert eru es- esb esc esd ese esf esk esl esn esr ess est esu etb etc etd ete etf etk etl etn etr ets ett etu eu- eub euc eud eue euf eul eun eur eus eut fbb fbc fbd fbe fbf fbk fbl fbn fbr fbs fbt fbu fcb fcc fcd fce fcf fck fcl fcn fcr fcs fct fcu fdb fdc fdd fde fdf fdk fdl fdn fdr fds fdt fdu feb fec fed fee fef fek fel fen fer fes fet feu ffc ffd ffe fff ffk ffl ffn ffr ffs fft ffu fkb fkc fkf fkk fkl fkt flb flc fld fle flf fll fln flr fls flt flu fnb fnc fnd fne fnf fnk fnl fnn fnr fns fnt fnu frb frc frd fre frf frk frl frn frr frs frt fru fsb fsc fsd fse fsf fsk fsl fsn fsr fss fst fsu ftb ftc ftd fte ftf ftk ftl ftn ftr fts ftt ftu fub fud fue fuf fuk ful fun fur fus fut fuu k-t kbb kbc kbd kbe kbf kbk kbl kbn kbr kbs kbu kcb kcc kcd kce kck kcl kcn kcr kcs kct kcu kdb kdc kde kdf kdk kdl kdr kds kdt kdu ke- keb kec ked kee kef kek kel ken ker kes ket kfc kfd kff kfs kfu kkb kkc kke kkk kkl kkn kkr kks kkt kku kl- klb klc kld klf klr kls klt klu kn- knc knd kne knf knk knl knn knr knt knu krc krd krf krk krl krn krr krs krt kru ksb ksc ksd kse ksf ksk ksl ksn ksr kss kst ksu ktb ktc kte ktf ktk ktl ktn ktr kts ktt ktu kub kuc kud kue kuk kul kun kur kus kut kuu lbb lbc lbd lbe lbf lbk lbl lbr lbs lbt lbu lcb lcc lcd lce lcf lck lcl lcn lcr lcs lct lcu ldb ldc ldd lde ldf ldk ldl ldn ldr lds ldt ldu leb lec led lee lef lek lel len ler les let leu lfb lfc lfd lfe lff lfk lfl lfn lfr lfs lft lfu lkb lkl lkr lks lkt llb llc lld lle llf llk lll lln llr lls llt llu lnb lnc lnd lne lnk lnl lnn lnr lns lnt lnu lrb lrc lrd lrf lrk lrn lrr lrs lrt lru lsb lsc lsd lse lsf lsk lsl lsn lsr lss lst lsu ltb ltc ltd lte ltf ltk ltl ltr lts ltt ltu lub luc lud lue luf luk lul lun lur lus lut luu nbb nbc nbd nbe nbf nbk nbl nbn nbr nbs nbt nbu ncb ncc ncd nce ncf nck ncl ncn ncr ncs nct ncu ndb ndc ndd nde ndf ndk ndl ndn ndr nds ndt ndu ne- neb nec ned nee nef nek nel nen ner