bbb bbe bbg bbn bbo bbs be- beb bee beg ben beo bes bgb bge bgg bgn bgo bgs bnb bne bng bnn bno bns bob boe bog bon boo bos bsb bse bsg bsn bso bss ebb ebe ebg ebn ebo ebs eeb eee eeg een eeo ees egb ege egg egn ego egs en- enb ene eng enn eno ens eo- eob eoe eog eon eoo eos es- esb ese esg esn eso ess gbe gbg gbn gbo gbs ge- geb gee geg gen geo ges ggb ggg ggn ggo ggs gnb gne gnn gno gns gob goe gog gon goo gos gsb gse gsg gsn gso gss nbb nbe nbg nbn nbo nbs ne- neb nee neg nen neo nes ngb nge ngg ngn ngo ngs nnb nne nng nnn nno nns no- nob noe nog non noo nos nsb nse nsg nsn nso nss ob- obb obe obg obn obo obs oeb oee oeg oen oeo oes oge ogg ogn ogo ogs on- onb one ong onn ono ons oo- oob oog oon ooo oos os- osb ose osg osn oso oss sbb sbe sbg sbn sbo sbs se- seb see seg sen seo ses sgb sge sgg sgn sgo sgs snb sne sng snn sno sns sob soe sog son soo sos ss- ssb sse ssg ssn sso sss