-er -ic -up b-p b-u bbb bbc bbe bbi bbn bbo bbp bbr bbu bcb bcc bce bci bcn bco bcp bcr bcu be- beb bec bee bei ben beo bep ber beu bi- bib bic bie bii bin bio bip bir biu bnb bnc bne bni bnn bno bnp bnr bnu bob boc boe boi bon boo bop bor bou bpb bpc bpe bpi bpn bpo bpp bpr bpu brb bre bri brn bro brp brr bru bub buc bue bui bun buo bup bur buu c-- cbb cbc cbe cbi cbn cbo cbp cbr cbu ccb ccc cce cci ccn cco ccp ccr ccu ce- ceb cec cee cei cen ceo cep cer ceu ci- cib cic cie cii cin cio cip cir ciu cn- cnb cnc cne cni cnn cno cnp cnr cnu co- cob coc coe coi con coo cop cor cou cpb cpc cpe cpi cpn cpo cpp cpr cpu crb crc cre cri crn cro crp crr cru cub cuc cue cui cun cuo cup cur cuu ebb ebc ebe ebi ebn ebo ebp ebr ebu ec- ecb ecc ece eci ecn eco ecr ecu eeb eec eee een eeo eep eer eib eic eie eii ein eio eip eir eiu en- enb enc ene eni enn eno enp enr enu eo- eob eoc eoe eoi eon eoo eop eor eou ep- epb epc epe epi epn epo epp epr epu erb erc ere eri ern ero erp err eru eu- eub euc eue eui eun eup eur ibb ibc ibe ibi ibn ibo ibp ibr ibu icb icc ice ici icn ico icp icr icu ie- iec iee iei ien iep ier iib iic iie iii iin iio iip iir iiu in- inb inc ine ini inn ino inp inr inu io- iob ioc ioe ioi ion ioo iop ior iou ipb ipc ipe ipi ipn ipo ipp ipr ipu ir- irb irc ire iri irn iro irp irr iru iu- iub iuc iue iui iup iur n-i nbb nbc nbe nbi nbn nbo nbp nbr nbu ncb ncc nce nci ncn nco ncp ncr ncu ne- neb nec nee nei nen neo nep ner neu nib nic nie nii nin nio nip nir niu nnb nnc nne nni nnn nno nnp nnu no- nob noc noe noi non noo nop nor nou npb npc npe npi npn npo npp npr npu nrb nrc nre nri nrn nro nrp nrr nru nub nuc nue nui nun nuo nup nur nuu o-i ob- obb obc obe obi obn obo obp obr obu oc- ocb occ oci ocn oco ocp ocr ocu oeb oec oee oei oen oeo oep oer oib oic oie oii oin oio oip oir oiu on- onb onc one oni onn ono onp onr onu oo- oob ooc ooi oon ooo oop oor op- opb opc ope opi opn opo opp opr or- orb orc ore ori orn oro orp orr oru ou- ouc oue oui oun ouo oup our p-p pbb pbc pbe pbi pbn pbo pbp pbr pbu pcb pcc pce pci pcn pco pcp pcr pcu peb pec pee pei pen peo pep per peu pib pic pie pii pin pio pip pir piu pn- pnb pnc pne pni pnn pno pnp pnr pnu pob poc poe poi pon poo pop por pou ppb ppc ppe ppi ppn ppo ppp ppr ppu prb prc pre pri prn pro prp prr pru pub puc pue pui pun pup pur puu rbb rbc rbe rbi rbn rbo rbp rbr rbu rcb rcc rce rci rcn rco rcp rcr rcu re- reb rec ree rei ren reo rep rer reu rib ric rie rii rin rio rip rir rnb rnc rni rnn rno rnp rnr rnu rob roc roe roi ron roo rop ror rou rpb rpc rpe rpi rpn rpo rpp rpr rpu rrb rrc rri rrn rrp rrr rru rub ruc rue rui run ruo rup rur ruu ubb ubc ube ubi ubn ubo ubp ubr ubu ucb ucc uce uci ucn uco ucp ucr ucu ueb uec uee uei uen uep uer uib uic uie uii uin uio uip uir uiu un- unb unc une uni unn uno unp unr unu uob uoc uoe uon uoo uop uor up- upb upc upe upi upn upo upp upr upu ur- urb urc ure uri urn uro urp urr uru uuc uue uun uur uuu