b-p bbb bbg bbi bbo bbp bbs bgb bgg bgi bgo bgp bgs bi- bib big bii bio bip bis bob bog boi boo bop bos bpb bpg bpi bpo bpp bps bsb bsg bsi bso bsp bss g-p gbg gbi gbo gbp gbs ggb ggg ggi ggo ggp ggs gib gig gii gio gip gis gob gog goi goo gop gos gpb gpg gpi gpo gpp gps gsb gsg gsi gso gsp gss ibb ibg ibi ibo ibp ibs igb igg igi igo igp igs iib iii iio iip iis io- iob iog ioi ioo iop ios ipb ipg ipi ipo ipp ips is- isb isg isi iso isp iss o-i ob- obb obg obi obo obp obs ogg ogi ogo ogp ogs oib oii oio oip ois oo- oob oog ooi ooo oop oos op- opb opg opi opo opp ops os- osb osg osi oso osp oss p-p pbb pbg pbi pbo pbp pbs pgb pgg pgi pgo pgp pgs pib pig pii pio pip pis pob pog poi poo pop pos ppb ppg ppi ppo ppp pps ps- psb psg psi pso psp pss sbb sbg sbi sbo sbp sbs sgb sgg sgi sgo sgp sgs sib sig sii sio sip sis sob sog soi soo sop sos spb spg spi spo spp sps ss- ssb ssg ssi sso ssp sss