-er -ic b-u bbb bbc bbe bbi bbn bbo bbr bbs bbu bcb bcc bce bci bcn bco bcr bcs bcu be- beb bec bee bei ben beo ber bes beu bi- bib bic bie bii bin bio bir bis biu bnb bnc bne bni bnn bno bnr bns bnu bob boc boe boi bon boo bor bos bou brb bre bri brn bro brr brs bru bsb bsc bse bsi bsn bso bsr bss bsu bub buc bue bui bun buo bur bus buu c-- cbb cbc cbe cbi cbn cbo cbr cbs cbu ccb ccc cce cci ccn cco ccr ccs ccu ce- ceb cec cee cei cen ceo cer ces ceu ci- cib cic cie cii cin cio cir cis ciu cn- cnb cnc cne cni cnn cno cnr cns cnu co- cob coc coe coi con coo cor cos cou crb crc cre cri crn cro crr crs cru csb csc cse csi csn cso csr css csu cub cuc cue cui cun cuo cur cus cuu ebb ebc ebe ebi ebn ebo ebr ebs ebu ec- ecb ecc ece eci ecn eco ecr ecs ecu eeb eec eee een eeo eer ees eib eic eie eii ein eio eir eis eiu en- enb enc ene eni enn eno enr ens enu eo- eob eoc eoe eoi eon eoo eor eos eou erb erc ere eri ern ero err ers eru es- esb esc ese esi esn eso esr ess esu eu- eub euc eue eui eun eur eus ibb ibc ibe ibi ibn ibo ibr ibs ibu icb icc ice ici icn ico icr ics icu ie- iec iee iei ien ier ies iib iic iie iii iin iio iir iis iiu in- inb inc ine ini inn ino inr ins inu io- iob ioc ioe ioi ion ioo ior ios iou ir- irb irc ire iri irn iro irr irs iru is- isb isc ise isi isn iso isr iss isu iu- iub iuc iue iui iur ius n-i nbb nbc nbe nbi nbn nbo nbr nbs nbu ncb ncc nce nci ncn nco ncr ncs ncu ne- neb nec nee nei nen neo ner nes neu nib nic nie nii nin nio nir nis niu nnb nnc nne nni nnn nno nns nnu no- nob noc noe noi non noo nor nos nou nrb nrc nre nri nrn nro nrr nrs nru nsb nsc nse nsi nsn nso nsr nss nsu nub nuc nue nui nun nuo nur nus nuu o-i ob- obb obc obe obi obn obo obr obs obu oc- ocb occ oci ocn oco ocr ocs ocu oeb oec oee oei oen oeo oer oes oib oic oie oii oin oio oir ois oiu on- onb onc one oni onn ono onr ons onu oo- oob ooc ooi oon ooo oor oos or- orb orc ore ori orn oro orr ors oru os- osb osc ose osi osn oso osr oss osu ou- ouc oue oui oun ouo our ous rbb rbc rbe rbi rbn rbo rbr rbs rbu rcb rcc rce rci rcn rco rcr rcs rcu re- reb rec ree rei ren reo rer res reu rib ric rie rii rin rio rir ris rnb rnc rni rnn rno rnr rns rnu rob roc roe roi ron roo ror ros rou rrb rrc rri rrn rrr rrs rru rsb rsc rse rsi rsn rso rsr rss rsu rub ruc rue rui run ruo rur rus ruu sbb sbc sbe sbi sbn sbo sbr sbs sbu scb scc sce sci scn sco scr scs scu se- seb sec see sei sen seo ser ses seu sib sic sie sii sin sio sir sis siu snb snc sne sni snn sno snr sns snu sob soc soe soi son soo sor sos sou sr- srb src sre sri srn sro srr srs ss- ssb ssc sse ssi ssn sso ssr sss ssu sub suc sue sui sun suo sur sus suu ubb ubc ube ubi ubn ubo ubr ubs ubu ucb ucc uce uci ucn uco ucr ucs ucu ueb uec uee uei uen uer ues uib uic uie uii uin uio uir uis uiu un- unb unc une uni unn uno unr uns unu uob uoc uoe uon uoo uor uos ur- urb urc ure uri urn uro urr urs uru usb usc use usi usn uso usr uss usu uuc uue uun uur uus uuu