b-u bbb bbd bbe bbk bbo bbu bdb bdd bde bdk bdo bdu bdz be- beb bed bee bek beo beu bez bkb bke bkk bko bob bod boe bok boo bou boz bub bud bue buk buo buu buz bzd bze bzo bzu bzz dbb dbd dbe dbk dbo dbu dbz ddb ddd dde ddk ddo ddu ddz de- deb ded dee dek deo deu dez dkb dke dkk dko dku dob dod doe dok doo dou doz dub dud due duk duo duz dzb dzd dze dzo dzu ebb ebd ebe ebk ebo ebu ed- edb edd ede edk edo edu eeb eed eee eek eeo ekb ekd eke eko eku eo- eob eod eoe eok eoo eou eu- eub eud eue eze ezo ezz k-z kbb kbd kbe kbk kbo kbu kbz kdb kde kdk kdo kdu ke- keb ked kee kek keo kez kkb kke kkk kku kob kod koe kok koo kou koz kub kud kue kuk kuu kzo ob- obb obd obe obk obo obu odb odd ode odo odu oeb oed oee oeo okb okd oke okk oko oku oo- oob ood ook ooo ou- oud oue ouk ouo oze ozo ozu ozz ubb ube ubk ubo ubu udb udd ude udk udo udu ueb ued uee ukb uke ukk uku ukz uob uod uoe uok uoo uue uuu uzb uzo uzu zbb zeb zed zee zek zeo zez zo- zob zod zoe zok zoo zou zub zud zuk zuz zzz