bbb bbc bbe bbh bbx bcb bcc bce bch bcx be- beb bec bee beh bex bhb bhc bhe bhh bhx bxb bxx c-- cbb cbc cbe cbh cbx ccb ccc cce cch ccx ce- ceb cec cee ceh cex ch- chb chc che chh chx cxc cxh cxx ebb ebc ebe ebh ebx ec- ecb ecc ece ech ecx eeb eec eee eex ehb ehc ehe ehh ex- exc exe exh exx hbb hbc hbe hbh hbx hcb hcc hce hch he- heb hec hee heh hex hhb hhc hhe hhh hxc xbc xbe xbx xcb xch xcx xee xex xxx