bbb bbe bbh bbi bbl bbx be- beb bee beh bei bel bex bhb bhe bhh bhi bhl bhx bi- bib bie bih bii bil bix blb ble blh bli bll blx bxb bxi bxl bxx ebb ebe ebh ebi ebl ebx eeb eee eel eex ehb ehe ehh ehi ehl eib eie eii eil eix elb ele elh eli ell elx ex- exe exh exi exl exx h-i hbb hbe hbh hbi hbl hbx he- heb hee heh hei hel hex hhb hhe hhh hhi hhl hib hie hih hii hil hix hlb hle hlh hli hll hlx hxl ibb ibe ibh ibi ibl ibx ie- iee iei iel iex ihb ihe ihh ihi ihl iib iie iih iii iil iix il- ilb ile ilh ili ill ilx ixe ixi ixl lbb lbe lbh lbi lbl lbx leb lee leh lei lel lex lhb lhh lhi lhx lib lie lih lii lil lix llb lle lli lll lxi lxx xbe xbl xbx xee xel xex xie xii xix xlb xli xxi xxl xxx