bbb bbc bbe bbh bbo bbx bcb bcc bce bch bco bcx be- beb bec bee beh beo bex bhb bhc bhe bhh bho bhx bob boc boe boh boo box bxb bxo bxx c-- cbb cbc cbe cbh cbo cbx ccb ccc cce cch cco ccx ce- ceb cec cee ceh ceo cex ch- chb chc che chh cho chx co- cob coc coe coh coo cox cxc cxh cxo cxx ebb ebc ebe ebh ebo ebx ec- ecb ecc ece ech eco ecx eeb eec eee eeo eex ehb ehc ehe ehh eho eo- eob eoc eoe eoh eoo ex- exc exe exh exo exx hbb hbc hbe hbh hbo hbx hcb hcc hce hch hco he- heb hec hee heh heo hex hhb hhc hhe hhh hho hob hoc hoe hoh hoo hox hxc ob- obb obc obe obh obo obx oc- ocb occ och oco ocx oeb oec oee oeh oeo oex ohc ohe ohh oho oo- oob ooc ooh ooo oox ox- oxb oxc oxo oxx xbc xbe xbx xcb xch xcx xee xex xoc xoo xox xxo xxx