b-u bbb bbd bbi bbo bbu bdb bdd bdi bdo bdu bdz bi- bib bid bii bio biu biz bob bod boi boo bou boz bub bud bui buo buu buz bzd bzo bzu bzz dbb dbd dbi dbo dbu dbz ddb ddd ddi ddo ddu ddz di- dib did dii dio diu diz dob dod doi doo dou doz dub dud dui duo duz dzb dzd dzi dzo dzu i-d ibb ibd ibi ibo ibu ibz idb idd idi ido idu iib iid iii iio iiu io- iob iod ioi ioo iou iu- iub iud iui iuz izi izo izu izz o-i ob- obb obd obi obo obu odb odd odi odo odu oib oid oii oio oiu oiz oo- oob ood ooi ooo ou- oud oui ouo ozo ozu ozz ubb ubi ubo ubu udb udd udi udo udu uib uid uii uio uiu uob uod uoo uuu uzb uzi uzo uzu zbb zib zid zio ziz zo- zob zod zoi zoo zou zub zud zui zuz zzz