-up b-p b-u bbb bbg bbi bbp bbs bbt bbu bgb bgg bgi bgp bgs bgt bgu bi- bib big bii bip bis bit biu bpb bpg bpi bpp bps bpt bpu bsb bsg bsi bsp bss bst bsu btb btg bti btp bts btt btu bub bug bui bup bus but buu g-p gbg gbi gbp gbs gbt gbu ggb ggg ggi ggp ggs ggt ggu gib gig gii gip gis git giu gpb gpg gpi gpp gps gpt gpu gsb gsg gsi gsp gss gst gsu gtb gtg gti gtp gts gtt gtu gu- gub gug gui gup gus gut guu ibb ibg ibi ibp ibs ibt ibu igb igg igi igp igs igt igu iib iii iip iis iit iiu ipb ipg ipi ipp ips ipt ipu is- isb isg isi isp iss ist isu itb itg iti itp its itt itu iu- iub iug iui iup ius iut p-p pbb pbg pbi pbp pbs pbt pbu pgb pgg pgi pgp pgs pgt pib pig pii pip pis pit piu ppb ppg ppi ppp pps ppt ppu ps- psb psg psi psp pss pst psu pt- ptb ptg pti ptp pts ptt ptu pub pug pui pup pus put puu sbb sbg sbi sbp sbs sbt sbu sgb sgg sgi sgp sgs sgt sgu sib sig sii sip sis sit siu spb spg spi spp sps spt spu ss- ssb ssg ssi ssp sss sst ssu stb stg sti stp sts stt stu sub sug sui sup sus sut suu tbb tbg tbi tbp tbs tbt tbu tgb tgg tgi tgp tgs tgt tgu tib tig tii tip tis tit tiu tpb tpg tpi tpp tps tpt tpu tsb tsg tsi tsp tss tst tsu ttb ttg tti ttp tts ttt ttu tub tug tui tup tus tut tuu ubb ubg ubi ubp ubs ubt ubu ugb ugg ugi ugp ugs ugt ugu uib uig uii uip uis uit uiu up- upb upg upi upp ups upt upu usb usg usi usp uss ust usu utb uti utp uts utt utu uug uus uut uuu