b-p bbb bbg bbi bbo bbp bgb bgg bgi bgo bgp bgz bi- bib big bii bio bip biz bob bog boi boo bop boz bpb bpg bpi bpo bpp bzo bzp bzz g-p gbg gbi gbo gbp gbz ggb ggg ggi ggo ggp ggz gib gig gii gio gip giz gob gog goi goo gop goz gpb gpg gpi gpo gpp gpz gzo gzp ibb ibg ibi ibo ibp ibz igb igg igi igo igp iib iii iio iip io- iob iog ioi ioo iop ipb ipg ipi ipo ipp izi izo izz o-i ob- obb obg obi obo obp ogg ogi ogo ogp oib oii oio oip oiz oo- oob oog ooi ooo oop op- opb opg opi opo opp ozo ozz p-p pbb pbg pbi pbo pbp pbz pgb pgg pgi pgo pgp pib pig pii pio pip piz pob pog poi poo pop poz ppb ppg ppi ppo ppp ppz pzp z-g zbb zgb zgg zgi zib zig zio zip ziz zo- zob zog zoi zoo zpg zpi zpo zpp zzz