b-p bbb bbg bbi bbo bbp bbs bbt bgb bgg bgi bgo bgp bgs bgt bi- bib big bii bio bip bis bit bob bog boi boo bop bos bot bpb bpg bpi bpo bpp bps bpt bsb bsg bsi bso bsp bss bst btb btg bti bto btp bts btt g-p gbg gbi gbo gbp gbs gbt ggb ggg ggi ggo ggp ggs ggt gib gig gii gio gip gis git gob gog goi goo gop gos got gpb gpg gpi gpo gpp gps gpt gsb gsg gsi gso gsp gss gst gtb gtg gti gto gtp gts gtt ibb ibg ibi ibo ibp ibs ibt igb igg igi igo igp igs igt iib iii iio iip iis iit io- iob iog ioi ioo iop ios iot ipb ipg ipi ipo ipp ips ipt is- isb isg isi iso isp iss ist itb itg iti ito itp its itt o-i ob- obb obg obi obo obp obs obt ogg ogi ogo ogp ogs ogt oib oii oio oip ois oit oo- oob oog ooi ooo oop oos oot op- opb opg opi opo opp ops opt os- osb osg osi oso osp oss ost ot- otb otg oti oto otp ots ott p-p pbb pbg pbi pbo pbp pbs pbt pgb pgg pgi pgo pgp pgs pgt pib pig pii pio pip pis pit pob pog poi poo pop pos pot ppb ppg ppi ppo ppp pps ppt ps- psb psg psi pso psp pss pst pt- ptb ptg pti pto ptp pts ptt sbb sbg sbi sbo sbp sbs sbt sgb sgg sgi sgo sgp sgs sgt sib sig sii sio sip sis sit sob sog soi soo sop sos sot spb spg spi spo spp sps spt ss- ssb ssg ssi sso ssp sss sst stb stg sti sto stp sts stt tbb tbg tbi tbo tbp tbs tbt tgb tgg tgi tgo tgp tgs tgt tib tig tii tio tip tis tit to- tob tog toi too top tos tot tpb tpg tpi tpo tpp tps tpt tsb tsg tsi tso tsp tss tst ttb ttg tti tto ttp tts ttt