bbb bbd bbe bbi bbk bbo bdb bdd bde bdi bdk bdo bdz be- beb bed bee bei bek beo bez bi- bib bid bie bii bik bio biz bkb bke bkk bko bob bod boe boi bok boo boz bzd bze bzo bzz dbb dbd dbe dbi dbk dbo dbz ddb ddd dde ddi ddk ddo ddz de- deb ded dee dei dek deo dez di- dib did die dii dik dio diz dkb dke dki dkk dko dob dod doe doi dok doo doz dzb dzd dze dzi dzo ebb ebd ebe ebi ebk ebo ed- edb edd ede edi edk edo eeb eed eee eek eeo eib eid eie eii eik eio ekb ekd eke eki eko eo- eob eod eoe eoi eok eoo eze ezo ezz i-d ibb ibd ibe ibi ibk ibo ibz idb idd ide idi idk ido ie- ied iee iei iek iib iid iie iii iio ikb ike iki ikk iko io- iob iod ioe ioi ioo ize izi izo izz k-z kbb kbd kbe kbi kbk kbo kbz kdb kde kdk kdo ke- keb ked kee kei kek keo kez kib kid kie kii kik kio kiz kkb kke kki kkk kob kod koe koi kok koo koz kzo o-i ob- obb obd obe obi obk obo odb odd ode odi odo oeb oed oee oei oeo oib oid oie oii oik oio oiz okb okd oke oki okk oko oo- oob ood ooi ook ooo oze ozo ozz zbb zeb zed zee zek zeo zez zib zid zie zik zio ziz zo- zob zod zoe zoi zok zoo zzz