b-p bbb bbe bbi bbk bbl bbp be- beb bee bei bek bel bep bi- bib bie bii bik bil bip bkb bke bkk bkl bkp blb ble bli blk bll blp bpb bpe bpi bpl bpp ebb ebe ebi ebk ebl ebp eeb eee eek eel eep eib eie eii eik eil eip ekb eke eki ekl ekp elb ele eli elk ell elp ep- epb epe epi epl epp ibb ibe ibi ibk ibl ibp ie- iee iei iek iel iep iib iie iii iil iip ikb ike iki ikk ikl il- ilb ile ili ilk ill ilp ipb ipe ipi ipl ipp kbb kbe kbi kbk kbl kbp ke- keb kee kei kek kel kep kib kie kii kik kil kip kkb kke kki kkk kkl kkp kl- klb kli kpe kpi kpk kpl kpp l-p lbb lbe lbi lbk lbl lbp leb lee lei lek lel lep lib lie lii lik lil lip lkb lkl lkp llb lle lli llk lll llp lpb lpe lpi lpk lpl lpp p-p pbb pbe pbi pbk pbl pbp peb pee pei pek pel pep pib pie pii pik pil pip pkb pke pki pkl pkp plb ple pli plk pll plp ppb ppe ppi ppk ppl ppp