b-u bbb bbc bbd bbe bbm bbn bbo bbu bcb bcc bcd bce bcm bcn bco bcu bdb bdc bdd bde bdm bdo bdu be- beb bec bed bee bem ben beo beu bmb bmc bmd bme bmm bmn bmo bmu bnb bnc bnd bne bnn bno bnu bob boc bod boe bom bon boo bou bub buc bud bue bum bun buo buu c-- cbb cbc cbd cbe cbm cbn cbo cbu ccb ccc ccd cce ccm ccn cco ccu cdb cdc cdd cde cdm cdn cdo cdu ce- ceb cec ced cee cem cen ceo ceu cmb cmc cmd cme cmm cmn cmo cmu cn- cnb cnc cnd cne cnm cnn cno cnu co- cob coc cod coe com con coo cou cub cuc cud cue cum cun cuo cuu dbb dbc dbd dbe dbm dbn dbo dbu dcb dcc dcd dce dcm dcn dco dcu ddb ddc ddd dde ddm ddn ddo ddu de- deb dec ded dee dem den deo deu dmb dmc dmd dme dmm dmn dmo dmu dnb dnc dnd dne dnm dnn dno dob doc dod doe dom don doo dou dub duc dud due dum dun duo ebb ebc ebd ebe ebm ebn ebo ebu ec- ecb ecc ecd ece ecm ecn eco ecu ed- edb edc edd ede edm edn edo edu eeb eec eed eee eem een eeo em- emb emc emd eme emm emn emo emu en- enb enc end ene enm enn eno enu eo- eob eoc eod eoe eom eon eoo eou eu- eub euc eud eue eun m-o mbb mbc mbd mbe mbm mbo mbu mc- mcb mcc mcd mce mcm mcn mco mcu mdb mdc mdd mde mdm mdn mdo mdu meb mec med mee mem men meo meu mmb mmc mmd mme mmm mmn mmo mmu mnb mnc mne mnm mnn mno mnu mob moc mod moe mom mon moo mou mub muc mud mue mum mun muu nbb nbc nbd nbe nbm nbn nbo nbu ncb ncc ncd nce ncm ncn nco ncu ndb ndc ndd nde ndm ndn ndo ndu ne- neb nec ned nee nem nen neo neu nmb nmc nmd nme nmm nmn nmo nmu nnb nnc nne nnm nnn nno nnu no- nob noc nod noe nom non noo nou nub nuc nud nue num nun nuo nuu ob- obb obc obd obe obm obn obo obu oc- ocb occ ocd ocm ocn oco ocu odb odc odd ode odm odn odo odu oeb oec oed oee oem oen oeo om- omb omc omd ome omm omn omo omu on- onb onc ond one onn ono onu oo- oob ooc ood oom oon ooo ou- ouc oud oue oum oun ouo ubb ubc ube ubn ubo ubu ucb ucc ucd uce ucm ucn uco ucu udb udc udd ude udm udn udo udu ueb uec ued uee uem uen um- umb umc umd ume umm umn umo umu un- unb unc und une unm unn uno unu uob uoc uod uoe uom uon uoo uuc uue uum uun uuu