-er -ic -up b-p b-u bbb bbc bbe bbi bbn bbp bbr bbu bcb bcc bce bci bcn bcp bcr bcu be- beb bec bee bei ben bep ber beu bi- bib bic bie bii bin bip bir biu bnb bnc bne bni bnn bnp bnr bnu bpb bpc bpe bpi bpn bpp bpr bpu brb bre bri brn brp brr bru bub buc bue bui bun bup bur buu c-- cbb cbc cbe cbi cbn cbp cbr cbu ccb ccc cce cci ccn ccp ccr ccu ce- ceb cec cee cei cen cep cer ceu ci- cib cic cie cii cin cip cir ciu cn- cnb cnc cne cni cnn cnp cnr cnu cpb cpc cpe cpi cpn cpp cpr cpu crb crc cre cri crn crp crr cru cub cuc cue cui cun cup cur cuu ebb ebc ebe ebi ebn ebp ebr ebu ec- ecb ecc ece eci ecn ecr ecu eeb eec eee een eep eer eib eic eie eii ein eip eir eiu en- enb enc ene eni enn enp enr enu ep- epb epc epe epi epn epp epr epu erb erc ere eri ern erp err eru eu- eub euc eue eui eun eup eur ibb ibc ibe ibi ibn ibp ibr ibu icb icc ice ici icn icp icr icu ie- iec iee iei ien iep ier iib iic iie iii iin iip iir iiu in- inb inc ine ini inn inp inr inu ipb ipc ipe ipi ipn ipp ipr ipu ir- irb irc ire iri irn irp irr iru iu- iub iuc iue iui iup iur n-i nbb nbc nbe nbi nbn nbp nbr nbu ncb ncc nce nci ncn ncp ncr ncu ne- neb nec nee nei nen nep ner neu nib nic nie nii nin nip nir niu nnb nnc nne nni nnn nnp nnu npb npc npe npi npn npp npr npu nrb nrc nre nri nrn nrp nrr nru nub nuc nue nui nun nup nur nuu p-p pbb pbc pbe pbi pbn pbp pbr pbu pcb pcc pce pci pcn pcp pcr pcu peb pec pee pei pen pep per peu pib pic pie pii pin pip pir piu pn- pnb pnc pne pni pnn pnp pnr pnu ppb ppc ppe ppi ppn ppp ppr ppu prb prc pre pri prn prp prr pru pub puc pue pui pun pup pur puu rbb rbc rbe rbi rbn rbp rbr rbu rcb rcc rce rci rcn rcp rcr rcu re- reb rec ree rei ren rep rer reu rib ric rie rii rin rip rir rnb rnc rni rnn rnp rnr rnu rpb rpc rpe rpi rpn rpp rpr rpu rrb rrc rri rrn rrp rrr rru rub ruc rue rui run rup rur ruu ubb ubc ube ubi ubn ubp ubr ubu ucb ucc uce uci ucn ucp ucr ucu ueb uec uee uei uen uep uer uib uic uie uii uin uip uir uiu un- unb unc une uni unn unp unr unu up- upb upc upe upi upn upp upr upu ur- urb urc ure uri urn urp urr uru uuc uue uun uur uuu