bbb bbe bbg bbo bbs be- beb bee beg beo bes bgb bge bgg bgo bgs bob boe bog boo bos bsb bse bsg bso bss ebb ebe ebg ebo ebs eeb eee eeg eeo ees egb ege egg ego egs eo- eob eoe eog eoo eos es- esb ese esg eso ess gbe gbg gbo gbs ge- geb gee geg geo ges ggb ggg ggo ggs gob goe gog goo gos gsb gse gsg gso gss ob- obb obe obg obo obs oeb oee oeg oeo oes oge ogg ogo ogs oo- oob oog ooo oos os- osb ose osg oso oss sbb sbe sbg sbo sbs se- seb see seg seo ses sgb sge sgg sgo sgs sob soe sog soo sos ss- ssb sse ssg sso sss