bbb bbe bbg bbk bbn bbo bbs be- beb bee beg bek ben beo bes bgb bge bgg bgk bgn bgo bgs bkb bke bkg bkk bkn bko bks bnb bne bng bnk bnn bno bns bob boe bog bok bon boo bos bsb bse bsg bsk bsn bso bss ebb ebe ebg ebk ebn ebo ebs eeb eee eeg eek een eeo ees egb ege egg egn ego egs ekb eke ekg eko eks en- enb ene eng enk enn eno ens eo- eob eoe eog eok eon eoo eos es- esb ese esg esk esn eso ess gbe gbg gbk gbn gbo gbs ge- geb gee geg gek gen geo ges ggb ggg ggn ggo ggs gkb gkn gko gks gnb gne gnn gno gns gob goe gog gok gon goo gos gsb gse gsg gsk gsn gso gss kbb kbe kbk kbn kbo kbs ke- keb kee keg kek ken keo kes kgb kgo kgs kkb kke kkk kkn kks kn- kne kng knk knn kno kob koe kog kok kon koo kos ksb kse ksg ksk ksn kso kss nbb nbe nbg nbk nbn nbo nbs ne- neb nee neg nek nen neo nes ngb nge ngg ngk ngn ngo ngs nke nkk nkn nko nks nnb nne nng nnk nnn nno nns no- nob noe nog nok non noo nos nsb nse nsg nsk nsn nso nss ob- obb obe obg obk obn obo obs oeb oee oeg oen oeo oes oge ogg ogn ogo ogs okb oke okg okk oko oks on- onb one ong onk onn ono ons oo- oob oog ook oon ooo oos os- osb ose osg osk osn oso oss sbb sbe sbg sbk sbn sbo sbs se- seb see seg sek sen seo ses sgb sge sgg sgk sgn sgo sgs sk- skb ske skg skk sko sks snb sne sng snk snn sno sns sob soe sog sok son soo sos ss- ssb sse ssg ssk ssn sso sss