-er -ic b-u bbb bbc bbe bbi bbn bbo bbr bbs bbt bbu bcb bcc bce bci bcn bco bcr bcs bct bcu be- beb bec bee bei ben beo ber bes bet beu bi- bib bic bie bii bin bio bir bis bit biu bnb bnc bne bni bnn bno bnr bns bnt bnu bob boc boe boi bon boo bor bos bot bou brb bre bri brn bro brr brs brt bru bsb bsc bse bsi bsn bso bsr bss bst bsu btb btc bte bti btn bto btr bts btt btu bub buc bue bui bun buo bur bus but buu c-- cbb cbc cbe cbi cbn cbo cbr cbs cbt cbu ccb ccc cce cci ccn cco ccr ccs cct ccu ce- ceb cec cee cei cen ceo cer ces cet ceu ci- cib cic cie cii cin cio cir cis cit ciu cn- cnb cnc cne cni cnn cno cnr cns cnt cnu co- cob coc coe coi con coo cor cos cot cou crb crc cre cri crn cro crr crs crt cru csb csc cse csi csn cso csr css cst csu ctb ctc cte cti ctn cto ctr cts ctt ctu cub cuc cue cui cun cuo cur cus cut cuu ebb ebc ebe ebi ebn ebo ebr ebs ebt ebu ec- ecb ecc ece eci ecn eco ecr ecs ect ecu eeb eec eee een eeo eer ees eet eib eic eie eii ein eio eir eis eit eiu en- enb enc ene eni enn eno enr ens ent enu eo- eob eoc eoe eoi eon eoo eor eos eot eou erb erc ere eri ern ero err ers ert eru es- esb esc ese esi esn eso esr ess est esu etb etc ete eti etn eto etr ets ett etu eu- eub euc eue eui eun eur eus eut ibb ibc ibe ibi ibn ibo ibr ibs ibt ibu icb icc ice ici icn ico icr ics ict icu ie- iec iee iei ien ier ies iet iib iic iie iii iin iio iir iis iit iiu in- inb inc ine ini inn ino inr ins int inu io- iob ioc ioe ioi ion ioo ior ios iot iou ir- irb irc ire iri irn iro irr irs irt iru is- isb isc ise isi isn iso isr iss ist isu itb itc ite iti itn ito its itt itu iu- iub iuc iue iui iur ius iut n-i nbb nbc nbe nbi nbn nbo nbr nbs nbt nbu ncb ncc nce nci ncn nco ncr ncs nct ncu ne- neb nec nee nei nen neo ner nes net neu nib nic nie nii nin nio nir nis nit niu nnb nnc nne nni nnn nno nns nnt nnu no- nob noc noe noi non noo nor nos not nou nrb nrc nre nri nrn nro nrr nrs nrt nru nsb nsc nse nsi nsn nso nsr nss nst nsu ntb ntc nte nti ntn nto ntr nts ntt ntu nub nuc nue nui nun nuo nur nus nut nuu o-i ob- obb obc obe obi obn obo obr obs obt obu oc- ocb occ oci ocn oco ocr ocs oct ocu oeb oec oee oei oen oeo oer oes oet oib oic oie oii oin oio oir ois oit oiu on- onb onc one oni onn ono onr ons ont onu oo- oob ooc ooi oon ooo oor oos oot or- orb orc ore ori orn oro orr ors ort oru os- osb osc ose osi osn oso osr oss ost osu ot- otb otc ote oti otn oto otr ots ott otu ou- ouc oue oui oun ouo our ous out rbb rbc rbe rbi rbn rbo rbr rbs rbt rbu rcb rcc rce rci rcn rco rcr rcs rct rcu re- reb rec ree rei ren reo rer res ret reu rib ric rie rii rin rio rir ris rit rnb rnc rni rnn rno rnr rns rnt rnu rob roc roe roi ron roo ror ros rot rou rrb rrc rri rrn rrr rrs rrt rru rsb rsc rse rsi rsn rso rsr rss rst rsu rtb rtc rte rti rtn rto rtr rts rtt rtu rub ruc rue rui run ruo rur rus rut ruu sbb sbc sbe sbi sbn sbo sbr sbs sbt sbu scb scc sce sci scn sco scr scs sct scu se- seb sec see sei sen seo ser ses set seu sib sic sie sii sin sio sir sis sit siu snb snc sne sni snn sno snr sns snt snu sob soc soe soi son soo sor sos sot sou sr- srb src sre sri srn sro srr srs srt ss- ssb ssc sse ssi ssn sso ssr sss sst ssu stb stc ste sti stn sto str sts stt stu sub suc sue sui sun suo sur sus sut suu tbb tbc tbe tbi tbn tbo tbr tbs tbt tbu tcb tcc tce tci tcn tco tcr tcs tct tcu te- teb tec tee tei ten teo ter tes tet teu tib tic tie tii tin tio tir tis tit tiu tnb tnc tne tni tnn tno tnr tns tnt to- tob toc toe toi ton too tor tos tot tou trb trc tre tri trn tro trr trs trt tru tsb tsc tse tsi tsn tso tsr tss tst tsu ttb ttc tte tti ttn tto ttr tts ttt ttu tub tuc tue tui tun tuo tur tus tut tuu ubb ubc ube ubi ubn ubo ubr ubs ubt ubu ucb ucc uce uci ucn uco ucr ucs uct ucu ueb uec uee uei uen uer ues uet uib uic uie uii uin uio uir uis uit uiu un- unb unc une uni unn uno unr uns unt unu uob uoc uoe uon uoo uor uos uot ur- urb urc ure uri urn uro urr urs urt uru usb usc use usi usn uso usr uss ust usu utb utc ute uti utn uto utr uts