bbb bbe bbg bbi bbo bbs bbx be- beb bee beg bei beo bes bex bgb bge bgg bgi bgo bgs bgx bi- bib bie big bii bio bis bix bob boe bog boi boo bos box bsb bse bsg bsi bso bss bsx bxb bxi bxo bxx ebb ebe ebg ebi ebo ebs ebx eeb eee eeg eeo ees eex egb ege egg egi ego egs egx eib eie eig eii eio eis eix eo- eob eoe eog eoi eoo eos es- esb ese esg esi eso ess esx ex- exe exi exo exs exx gbe gbg gbi gbo gbs gbx ge- geb gee geg gei geo ges gex ggb ggg ggi ggo ggs gib gie gig gii gio gis gob goe gog goi goo gos gox gsb gse gsg gsi gso gss gsx gxs ibb ibe ibg ibi ibo ibs ibx ie- iee ieg iei ies iex igb ige igg igi igo igs iib iie iii iio iis iix io- iob ioe iog ioi ioo ios is- isb ise isg isi iso iss ixe ixi o-i ob- obb obe obg obi obo obs obx oeb oee oeg oei oeo oes oex oge ogg ogi ogo ogs ogx oib oie oii oio ois oo- oob oog ooi ooo oos oox os- osb ose osg osi oso oss osx ox- oxb oxi oxo oxx sbb sbe sbg sbi sbo sbs sbx se- seb see seg sei seo ses sex sgb sge sgg sgi sgo sgs sgx sib sie sig sii sio sis six sob soe sog soi soo sos sox ss- ssb sse ssg ssi sso sss ssx sxi sxs xbe xbx xee xeg xes xex xge xgi xie xii xio xis xix xog xoi xoo xos xox xsb xsi xss xxi xxo xxx