b-p bbb bbg bbi bbo bbp bbt bgb bgg bgi bgo bgp bgt bi- bib big bii bio bip bit bob bog boi boo bop bot bpb bpg bpi bpo bpp bpt btb btg bti bto btp btt g-p gbg gbi gbo gbp gbt ggb ggg ggi ggo ggp ggt gib gig gii gio gip git gob gog goi goo gop got gpb gpg gpi gpo gpp gpt gtb gtg gti gto gtp gtt ibb ibg ibi ibo ibp ibt igb igg igi igo igp igt iib iii iio iip iit io- iob iog ioi ioo iop iot ipb ipg ipi ipo ipp ipt itb itg iti ito itp itt o-i ob- obb obg obi obo obp obt ogg ogi ogo ogp ogt oib oii oio oip oit oo- oob oog ooi ooo oop oot op- opb opg opi opo opp opt ot- otb otg oti oto otp ott p-p pbb pbg pbi pbo pbp pbt pgb pgg pgi pgo pgp pgt pib pig pii pio pip pit pob pog poi poo pop pot ppb ppg ppi ppo ppp ppt pt- ptb ptg pti pto ptp ptt tbb tbg tbi tbo tbp tbt tgb tgg tgi tgo tgp tgt tib tig tii tio tip tit to- tob tog toi too top tot tpb tpg tpi tpo tpp tpt ttb ttg tti tto ttp ttt