-up b-p b-u bbb bbf bbi bbm bbp bbs bbt bbu bfb bff bfi bfm bfp bfs bft bfu bi- bib bif bii bim bip bis bit biu bmb bmf bmi bmm bmp bms bmt bmu bpb bpf bpi bpm bpp bps bpt bpu bsb bsf bsi bsm bsp bss bst bsu btb btf bti btm btp bts btt btu bub buf bui bum bup bus but buu fbb fbf fbi fbm fbp fbs fbt fbu fff ffi ffm ffp ffs fft ffu fib fif fii fim fip fis fit fiu fmb fmf fmi fmm fmp fms fmt fmu fpb fpi fpm fpp fps fpt fpu fsb fsf fsi fsm fsp fss fst fsu ftb ftf fti ftm ftp fts ftt ftu fub fuf fui fum fup fus fut fuu i-f ibb ibf ibi ibm ibp ibs ibt ibu ifb iff ifi ifm ifp ifs ift ifu iib iif iii iim iip iis iit iiu im- imb imf imi imm imp ims imt imu ipb ipf ipi ipm ipp ips ipt ipu is- isb isf isi ism isp iss ist isu itb itf iti itm itp its itt itu iu- iub iui ium iup ius iut m-f mbb mbf mbi mbm mbp mbs mbt mbu mfb mff mfi mfm mfp mfs mft mfu mi- mib mif mii mim mip mis mit miu mmb mmf mmi mmm mmp mms mmt mmu mpb mpf mpi mpm mpp mps mpt mpu msb msf msi msm msp mss mst msu mtb mtf mti mtm mtp mts mtt mtu mub muf mui mum mup mus mut muu p-p pbb pbf pbi pbm pbp pbs pbt pbu pfb pff pfi pfm pfp pfs pft pfu pib pif pii pim pip pis pit piu pmb pmf pmi pmm pmp pms pmt pmu ppb ppf ppi ppm ppp pps ppt ppu ps- psb psf psi psm psp pss pst psu pt- ptb ptf pti ptm ptp pts ptt ptu pub puf pui pum pup pus put puu sbb sbf sbi sbm sbp sbs sbt sbu sfb sff sfi sfm sfp sfs sft sfu sib sif sii sim sip sis sit siu smb smf smi smm smp sms smt smu spb spf spi spm spp sps spt spu ss- ssb ssf ssi ssm ssp sss sst ssu stb stf sti stm stp sts stt stu sub suf sui sum sup sus sut suu tbb tbf tbi tbm tbp tbs tbt tbu tfb tff tfi tfm tfp tfs tft tfu tib tif tii tim tip tis tit tiu tmb tmf tmi tmm tmp tms tmt tmu tpb tpf tpi tpm tpp tps tpt tpu tsb tsf tsi tsm tsp tss tst tsu ttb ttf tti ttm ttp tts ttt ttu tub tuf tui tum tup tus tut tuu ubb ubf ubi ubp ubs ubt ubu uff ufi ufm ufp ufs uft ufu uib uif uii uim uip uis uit uiu um- umb umf umi umm ump ums umt umu up- upb upf upi upm upp ups upt upu usb usf usi usm usp uss ust usu utb utf uti utm utp uts utt utu uum uus uut uuu