b-p bbb bbd bbi bbo bbp bby bdb bdd bdi bdo bdp bdy bi- bib bid bii bio bip biy bob bod boi boo bop boy bpb bpd bpi bpo bpp bpy by- byd byi byo byp dbb dbd dbi dbo dbp dby ddb ddd ddi ddo ddp ddy di- dib did dii dio dip diy dob dod doi doo dop doy dpb dpd dpi dpo dpp dy- dyb dyd dyo dyp dyy i-d ibb ibd ibi ibo ibp iby idb idd idi ido idp idy iib iid iii iio iip io- iob iod ioi ioo iop ipb ipd ipi ipo ipp ipy iyo iyy o-i ob- obb obd obi obo obp oby odb odd odi odo odp oib oid oii oio oip oo- oob ood ooi ooo oop op- opb opd opi opo opp opy oyd oyi oyo p-p pbb pbd pbi pbo pbp pby pdb pdd pdi pdo pdp pib pid pii pio pip pob pod poi poo pop poy ppb ppd ppi ppo ppp py- pyb pyd pyo ybi ybp yby ydo ydy yid yii yio yip yob yod yoi yoo yop yoy ypd ypo yyb yyy