b-u bbb bbc bbd bbe bbf bbm bbn bbo bbs bbt bbu bcb bcc bcd bce bcf bcm bcn bco bcs bct bcu bdb bdc bdd bde bdf bdm bdo bds bdt bdu be- beb bec bed bee bef bem ben beo bes bet beu bfb bfc bfd bfe bff bfm bfn bfo bfs bft bfu bmb bmc bmd bme bmf bmm bmn bmo bms bmt bmu bnb bnc bnd bne bnf bnn bno bns bnt bnu bob boc bod boe bof bom bon boo bos bot bou bsb bsc bsd bse bsf bsm bsn bso bss bst bsu btb btc btd bte btf btm btn bto bts btt btu bub buc bud bue buf bum bun buo bus but buu c-- cbb cbc cbd cbe cbf cbm cbn cbo cbs cbt cbu ccb ccc ccd cce ccf ccm ccn cco ccs cct ccu cdb cdc cdd cde cdf cdm cdn cdo cds cdt cdu ce- ceb cec ced cee cef cem cen ceo ces cet ceu cfb cfc cfd cfe cff cfm cfn cfo cfs cft cfu cmb cmc cmd cme cmf cmm cmn cmo cms cmt cmu cn- cnb cnc cnd cne cnf cnm cnn cno cns cnt cnu co- cob coc cod coe cof com con coo cos cot cou csb csc csd cse csf csm csn cso css cst csu ctb ctc ctd cte ctf ctm ctn cto cts ctt ctu cub cuc cud cue cuf cum cun cuo cus cut cuu dbb dbc dbd dbe dbf dbm dbn dbo dbs dbt dbu dcb dcc dcd dce dcf dcm dcn dco dcs dct dcu ddb ddc ddd dde ddf ddm ddn ddo dds ddt ddu de- deb dec ded dee def dem den deo des det deu dfb dfc dfd dfe dff dfm dfn dfo dfs dft dfu dmb dmc dmd dme dmf dmm dmn dmo dms dmt dmu dnb dnc dnd dne dnf dnm dnn dno dns dnt dob doc dod doe dof dom don doo dos dot dou dsb dsc dsd dse dsf dsm dsn dso dss dst dsu dtb dtc dtd dte dtf dtm dtn dto dts dtt dtu dub duc dud due duf dum dun duo dus dut ebb ebc ebd ebe ebf ebm ebn ebo ebs ebt ebu ec- ecb ecc ecd ece ecf ecm ecn eco ecs ect ecu ed- edb edc edd ede edf edm edn edo eds edt edu eeb eec eed eee eef eem een eeo ees eet ef- efb efc efd efe eff efm efo efs eft em- emb emc emd eme emf emm emn emo ems emt emu en- enb enc end ene enf enm enn eno ens ent enu eo- eob eoc eod eoe eof eom eon eoo eos eot eou es- esb esc esd ese esf esm esn eso ess est esu etb etc etd ete etf etm etn eto ets ett etu eu- eub euc eud eue euf eun eus eut fbb fbc fbd fbe fbf fbm fbn fbo fbs fbt fbu fcb fcc fcd fce fcf fcm fcn fco fcs fct fcu fdb fdc fdd fde fdf fdm fdn fdo fds fdt fdu feb fec fed fee fef fem fen feo fes fet feu ffc ffd ffe fff ffm ffn ffo ffs fft ffu fmb fmc fmd fme fmf fmm fmn fmo fms fmt fmu fnb fnc fnd fne fnf fnm fnn fns fnt fnu fob foc foe fof fom fon foo fos fot fou fsb fsc fsd fse fsf fsm fsn fso fss fst fsu ftb ftc ftd fte ftf ftm ftn fto fts ftt ftu fub fud fue fuf fum fun fuo fus fut fuu m-f m-o mbb mbc mbd mbe mbf mbm mbo mbs mbt mbu mc- mcb mcc mcd mce mcf mcm mcn mco mcs mct mcu mdb mdc mdd mde mdf mdm mdn mdo mds mdt mdu meb mec med mee mef mem men meo mes met meu mfb mfc mfd mfe mff mfm mfn mfo mfs mft mfu mmb mmc mmd mme mmf mmm mmn mmo mms mmt mmu mnb mnc mne mnf mnm mnn mno mns mnt mnu mob moc mod moe mof mom mon moo mos mot mou msb msc msd mse msf msm msn mso mss mst msu mtb mtc mtd mte mtf mtm mtn mto mts mtt mtu mub muc mud mue muf mum mun mus mut muu nbb nbc nbd nbe nbf nbm nbn nbo nbs nbt nbu ncb ncc ncd nce ncf ncm ncn nco ncs nct ncu ndb ndc ndd nde ndf ndm ndn ndo nds ndt ndu ne- neb nec ned nee nef nem nen neo nes net neu nfb nfc nfd nfe nff nfn nfo nfs nft nfu nmb nmc nmd nme nmm nmn nmo nms nmt nmu nnb nnc nne nnf nnm nnn nno nns nnt nnu no- nob noc nod noe nof nom non noo nos not nou nsb nsc nsd nse nsf nsm nsn nso nss nst nsu ntb ntc ntd nte ntf ntm ntn nto nts ntt ntu nub nuc nud nue num nun nuo nus nut nuu ob- obb obc obd obe obf obm obn obo obs obt obu oc- ocb occ ocd ocf ocm ocn oco ocs oct ocu odb odc odd ode odf odm odn odo ods odt odu oeb oec oed oee oef oem oen oeo oes oet of- ofb ofc ofd ofe off ofm ofn ofo ofs oft ofu om- omb omc omd ome omf omm omn omo oms omt omu on- onb onc ond one onf onn ono ons ont onu oo- oob ooc ood oof oom oon ooo oos oot os- osb osc osd ose osf osm osn oso oss ost osu ot- otb otc otd ote otf otm otn oto ots ott otu ou- ouc oud oue ouf oum oun ouo ous out sbb sbc sbd sbe sbf sbm sbn sbo sbs sbt sbu scb scc scd sce scf scm scn sco scs sct scu sdb sdc sdd sde sdf sdm sdn sdo sds