bbb bbe bbg bbi bbo bbs be- beb bee beg bei beo bes bgb bge bgg bgi bgo bgs bi- bib bie big bii bio bis bob boe bog boi boo bos bsb bse bsg bsi bso bss ebb ebe ebg ebi ebo ebs eeb eee eeg eeo ees egb ege egg egi ego egs eib eie eig eii eio eis eo- eob eoe eog eoi eoo eos es- esb ese esg esi eso ess gbe gbg gbi gbo gbs ge- geb gee geg gei geo ges ggb ggg ggi ggo ggs gib gie gig gii gio gis gob goe gog goi goo gos gsb gse gsg gsi gso gss ibb ibe ibg ibi ibo ibs ie- iee ieg iei ies igb ige igg igi igo igs iib iie iii iio iis io- iob ioe iog ioi ioo ios is- isb ise isg isi iso iss o-i ob- obb obe obg obi obo obs oeb oee oeg oei oeo oes oge ogg ogi ogo ogs oib oie oii oio ois oo- oob oog ooi ooo oos os- osb ose osg osi oso oss sbb sbe sbg sbi sbo sbs se- seb see seg sei seo ses sgb sge sgg sgi sgo sgs sib sie sig sii sio sis sob soe sog soi soo sos ss- ssb sse ssg ssi sso sss