-er -up b-p b-u bbb bbe bbi bbn bbp bbr bbt bbu be- beb bee bei ben bep ber bet beu bi- bib bie bii bin bip bir bit biu bnb bne bni bnn bnp bnr bnt bnu bpb bpe bpi bpn bpp bpr bpt bpu brb bre bri brn brp brr brt bru btb bte bti btn btp btr btt btu bub bue bui bun bup bur but buu ebb ebe ebi ebn ebp ebr ebt ebu eeb eee een eep eer eet eib eie eii ein eip eir eit eiu en- enb ene eni enn enp enr ent enu ep- epb epe epi epn epp epr ept epu erb ere eri ern erp err ert eru etb ete eti etn etp etr ett etu eu- eub eue eui eun eup eur eut ibb ibe ibi ibn ibp ibr ibt ibu ie- iee iei ien iep ier iet iib iie iii iin iip iir iit iiu in- inb ine ini inn inp inr int inu ipb ipe ipi ipn ipp ipr ipt ipu ir- irb ire iri irn irp irr irt iru itb ite iti itn itp itt itu iu- iub iue iui iup iur iut n-i nbb nbe nbi nbn nbp nbr nbt nbu ne- neb nee nei nen nep ner net neu nib nie nii nin nip nir nit niu nnb nne nni nnn nnp nnt nnu npb npe npi npn npp npr npt npu nrb nre nri nrn nrp nrr nrt nru ntb nte nti ntn ntp ntr ntt ntu nub nue nui nun nup nur nut nuu p-p pbb pbe pbi pbn pbp pbr pbt pbu peb pee pei pen pep per pet peu pib pie pii pin pip pir pit piu pn- pnb pne pni pnn pnp pnr pnt pnu ppb ppe ppi ppn ppp ppr ppt ppu prb pre pri prn prp prr prt pru pt- ptb pte pti ptn ptp ptr ptt ptu pub pue pui pun pup pur put puu rbb rbe rbi rbn rbp rbr rbt rbu re- reb ree rei ren rep rer ret reu rib rie rii rin rip rir rit rnb rni rnn rnp rnr rnt rnu rpb rpe rpi rpn rpp rpr rpt rpu rrb rri rrn rrp rrr rrt rru rtb rte rti rtn rtp rtr rtt rtu rub rue rui run rup rur rut ruu tbb tbe tbi tbn tbp tbr tbt tbu te- teb tee tei ten tep ter tet teu tib tie tii tin tip tir tit tiu tnb tne tni tnn tnp tnr tnt tpb tpe tpi tpn tpp tpr tpt tpu trb tre tri trn trp trr trt tru ttb tte tti ttn ttp ttr ttt ttu tub tue tui tun tup tur tut tuu ubb ube ubi ubn ubp ubr ubt ubu ueb uee uei uen uep uer uet uib uie uii uin uip uir uit uiu un- unb une uni unn unp unr unt unu up- upb upe upi upn upp upr upt upu ur- urb ure uri urn urp urr urt uru utb ute uti utn utp utr utt utu uue uun uur uut uuu