-er -up b-p b-u bbb bbe bbi bbn bbp bbr bbs bbt bbu be- beb bee bei ben bep ber bes bet beu bi- bib bie bii bin bip bir bis bit biu bnb bne bni bnn bnp bnr bns bnt bnu bpb bpe bpi bpn bpp bpr bps bpt bpu brb bre bri brn brp brr brs brt bru bsb bse bsi bsn bsp bsr bss bst bsu btb bte bti btn btp btr bts btt btu bub bue bui bun bup bur bus but buu ebb ebe ebi ebn ebp ebr ebs ebt ebu eeb eee een eep eer ees eet eib eie eii ein eip eir eis eit eiu en- enb ene eni enn enp enr ens ent enu ep- epb epe epi epn epp epr eps ept epu erb ere eri ern erp err ers ert eru es- esb ese esi esn esp esr ess est esu etb ete eti etn etp etr ets ett etu eu- eub eue eui eun eup eur eus eut ibb ibe ibi ibn ibp ibr ibs ibt ibu ie- iee iei ien iep ier ies iet iib iie iii iin iip iir iis iit iiu in- inb ine ini inn inp inr ins int inu ipb ipe ipi ipn ipp ipr ips ipt ipu ir- irb ire iri irn irp irr irs irt iru is- isb ise isi isn isp isr iss ist isu itb ite iti itn itp its itt itu iu- iub iue iui iup iur ius iut n-i nbb nbe nbi nbn nbp nbr nbs nbt nbu ne- neb nee nei nen nep ner nes net neu nib nie nii nin nip nir nis nit niu nnb nne nni nnn nnp nns nnt nnu npb npe npi npn npp npr nps npt npu nrb nre nri nrn nrp nrr nrs nrt nru nsb nse nsi nsn nsp nsr nss nst nsu ntb nte nti ntn ntp ntr nts ntt ntu nub nue nui nun nup nur nus nut nuu p-p pbb pbe pbi pbn pbp pbr pbs pbt pbu peb pee pei pen pep per pes pet peu pib pie pii pin pip pir pis pit piu pn- pnb pne pni pnn pnp pnr pns pnt pnu ppb ppe ppi ppn ppp ppr pps ppt ppu prb pre pri prn prp prr prs prt pru ps- psb pse psi psn psp psr pss pst psu pt- ptb pte pti ptn ptp ptr pts ptt ptu pub pue pui pun pup pur pus put puu rbb rbe rbi rbn rbp rbr rbs rbt rbu re- reb ree rei ren rep rer res ret reu rib rie rii rin rip rir ris rit rnb rni rnn rnp rnr rns rnt rnu rpb rpe rpi rpn rpp rpr rps rpt rpu rrb rri rrn rrp rrr rrs rrt rru rsb rse rsi rsn rsp rsr rss rst rsu rtb rte rti rtn rtp rtr rts rtt rtu rub rue rui run rup rur rus rut ruu sbb sbe sbi sbn sbp sbr sbs sbt sbu se- seb see sei sen sep ser ses set seu sib sie sii sin sip sir sis sit siu snb sne sni snn snp snr sns snt snu spb spe spi spn spp spr sps spt spu sr- srb sre sri srn srp srr srs srt ss- ssb sse ssi ssn ssp ssr sss sst ssu stb ste sti stn stp str sts stt stu sub sue sui sun sup sur sus sut suu tbb tbe tbi tbn tbp tbr tbs tbt tbu te- teb tee tei ten tep ter tes tet teu tib tie tii tin tip tir tis tit tiu tnb tne tni tnn tnp tnr tns tnt tpb tpe tpi tpn tpp tpr tps tpt tpu trb tre tri trn trp trr trs trt tru tsb tse tsi tsn tsp tsr tss tst tsu ttb tte tti ttn ttp ttr tts ttt ttu tub tue tui tun tup tur tus tut tuu ubb ube ubi ubn ubp ubr ubs ubt ubu ueb uee uei uen uep uer ues uet uib uie uii uin uip uir uis uit uiu un- unb une uni unn unp unr uns unt unu up- upb upe upi upn upp upr ups upt upu ur- urb ure uri urn urp urr urs urt uru usb use usi usn usp usr uss ust usu utb ute uti utn utp utr uts utt utu uue uun uur uus uut uuu