b-p bbb bbp bbr bbs bbt bpb bpp bpr bps bpt brb brp brr brs brt bsb bsp bsr bss bst btb btp btr bts btt p-p pbb pbp pbr pbs pbt ppb ppp ppr pps ppt prb prp prr prs prt ps- psb psp psr pss pst pt- ptb ptp ptr pts ptt rbb rbp rbr rbs rbt rpb rpp rpr rps rpt rrb rrp rrr rrs rrt rsb rsp rsr rss rst rtb rtp rtr rts rtt sbb sbp sbr sbs sbt spb spp spr sps spt sr- srb srp srr srs srt ss- ssb ssp ssr sss sst stb stp str sts stt tbb tbp tbr tbs tbt tpb tpp tpr tps tpt trb trp trr trs trt tsb tsp tsr tss tst ttb ttp ttr tts ttt

bbbb bbbs bbpr brrr brrs brsb brsr brst bspp bspr bsts btbp btps btrt btss bttb pbrs pbsp pppp ppps ppss ppts pptt prbs prps prrs prss prtp prtr psbr psbt pspp pspr psps psrp psst psts rbbb rbbr rbbs rbsp rbss rbst rpps rpts rrrr rrsp rspb rsps rstp rsts rtps rtss rttp rtts sbbs sbsp sbst spps sprs spsp spss spst sptb sptr spts srps srpt srsp srtp srtr ssbr ssps sspt ssrs sssb ssss sstb sstp ssts stbs stpp stps strs stss sttr tbbs tbrb tbsp tbst tbtp tppp tppr tprs tptp tptr trpp trps trst trtr tsps tspt tssr tsst tsts ttbb ttss tttt

brrrr btr-t pssst pssts ptprb ptprr ptprs ptprt rrsps srprb sssrb sssss strrs tbsps tbtbt tppts ttttt

bbbbbb bs-tbs pppppp ppsspp srprss

bbbbbbb sssssss

bbbbbbbb psssssst

bbbbbbbbbbbbbbb