b-p bbb bbd bbe bbi bbl bbp bdb bdd bde bdi bdl bdp be- beb bed bee bei bel bep bi- bib bid bie bii bil bip blb bld ble bli bll blp bpb bpd bpe bpi bpl bpp dbb dbd dbe dbi dbl dbp ddb ddd dde ddi ddl ddp de- deb ded dee dei del dep di- dib did die dii dil dip dl- dlb dld dle dli dll dlp dpb dpd dpe dpi dpl dpp ebb ebd ebe ebi ebl ebp ed- edb edd ede edi edl edp eeb eed eee eel eep eib eid eie eii eil eip elb eld ele eli ell elp ep- epb epd epe epi epl epp i-d ibb ibd ibe ibi ibl ibp idb idd ide idi idl idp ie- ied iee iei iel iep iib iid iie iii iil iip il- ilb ild ile ili ill ilp ipb ipd ipe ipi ipl ipp l-p lbb lbd lbe lbi lbl lbp ldb ldd lde ldi ldl ldp leb led lee lei lel lep lib lid lie lii lil lip llb lld lle lli lll llp lpb lpd lpe lpi lpl lpp p-p pbb pbd pbe pbi pbl pbp pdb pdd pde pdi pdl pdp peb ped pee pei pel pep pib pid pie pii pil pip plb pld ple pli pll plp ppb ppd ppe ppi ppl ppp