-up b-p b-u bbb bbe bbi bbn bbp bbs bbt bbu be- beb bee bei ben bep bes bet beu bi- bib bie bii bin bip bis bit biu bnb bne bni bnn bnp bns bnt bnu bpb bpe bpi bpn bpp bps bpt bpu bsb bse bsi bsn bsp bss bst bsu btb bte bti btn btp bts btt btu bub bue bui bun bup bus but buu ebb ebe ebi ebn ebp ebs ebt ebu eeb eee een eep ees eet eib eie eii ein eip eis eit eiu en- enb ene eni enn enp ens ent enu ep- epb epe epi epn epp eps ept epu es- esb ese esi esn esp ess est esu etb ete eti etn etp ets ett etu eu- eub eue eui eun eup eus eut ibb ibe ibi ibn ibp ibs ibt ibu ie- iee iei ien iep ies iet iib iie iii iin iip iis iit iiu in- inb ine ini inn inp ins int inu ipb ipe ipi ipn ipp ips ipt ipu is- isb ise isi isn isp iss ist isu itb ite iti itn itp its itt itu iu- iub iue iui iup ius iut n-i nbb nbe nbi nbn nbp nbs nbt nbu ne- neb nee nei nen nep nes net neu nib nie nii nin nip nis nit niu nnb nne nni nnn nnp nns nnt nnu npb npe npi npn npp nps npt npu nsb nse nsi nsn nsp nss nst nsu ntb nte nti ntn ntp nts ntt ntu nub nue nui nun nup nus nut nuu p-p pbb pbe pbi pbn pbp pbs pbt pbu peb pee pei pen pep pes pet peu pib pie pii pin pip pis pit piu pn- pnb pne pni pnn pnp pns pnt pnu ppb ppe ppi ppn ppp pps ppt ppu ps- psb pse psi psn psp pss pst psu pt- ptb pte pti ptn ptp pts ptt ptu pub pue pui pun pup pus put puu sbb sbe sbi sbn sbp sbs sbt sbu se- seb see sei sen sep ses set seu sib sie sii sin sip sis sit siu snb sne sni snn snp sns snt snu spb spe spi spn spp sps spt spu ss- ssb sse ssi ssn ssp sss sst ssu stb ste sti stn stp sts stt stu sub sue sui sun sup sus sut suu tbb tbe tbi tbn tbp tbs tbt tbu te- teb tee tei ten tep tes tet teu tib tie tii tin tip tis tit tiu tnb tne tni tnn tnp tns tnt tpb tpe tpi tpn tpp tps tpt tpu tsb tse tsi tsn tsp tss tst tsu ttb tte tti ttn ttp tts ttt ttu tub tue tui tun tup tus tut tuu ubb ube ubi ubn ubp ubs ubt ubu ueb uee uei uen uep ues uet uib uie uii uin uip uis uit uiu un- unb une uni unn unp uns unt unu up- upb upe upi upn upp ups upt upu usb use usi usn usp uss ust usu utb ute uti utn utp uts utt utu uue uun uus uut uuu