b-p bbb bbe bbg bbo bbp bbx be- beb bee beg beo bep bex bgb bge bgg bgo bgp bgx bob boe bog boo bop box bpb bpe bpg bpo bpp bpx bxb bxo bxx ebb ebe ebg ebo ebp ebx eeb eee eeg eeo eep eex egb ege egg ego egp egx eo- eob eoe eog eoo eop ep- epb epe epg epo epp epx ex- exe exo exp exx g-p gbe gbg gbo gbp gbx ge- geb gee geg geo gep gex ggb ggg ggo ggp gob goe gog goo gop gox gpb gpe gpg gpo gpp gpx gxp ob- obb obe obg obo obp obx oeb oee oeg oeo oep oex oge ogg ogo ogp ogx oo- oob oog ooo oop oox op- opb ope opg opo opp opx ox- oxb oxo oxx p-p pbb pbe pbg pbo pbp pbx peb pee peg peo pep pex pgb pge pgg pgo pgp pob poe pog poo pop pox ppb ppe ppg ppo ppp ppx pxe pxg xbe xbx xee xeg xep xex xge xgp xog xoo xop xox xpb xpe xpg xpo xpp xxo xxp xxx