-er -ic b-u bbb bbc bbe bbi bbn bbo bbr bbt bbu bcb bcc bce bci bcn bco bcr bct bcu be- beb bec bee bei ben beo ber bet beu bi- bib bic bie bii bin bio bir bit biu bnb bnc bne bni bnn bno bnr bnt bnu bob boc boe boi bon boo bor bot bou brb bre bri brn bro brr brt bru btb btc bte bti btn bto btr btt btu bub buc bue bui bun buo bur but buu c-- cbb cbc cbe cbi cbn cbo cbr cbt cbu ccb ccc cce cci ccn cco ccr cct ccu ce- ceb cec cee cei cen ceo cer cet ceu ci- cib cic cie cii cin cio cir cit ciu cn- cnb cnc cne cni cnn cno cnr cnt cnu co- cob coc coe coi con coo cor cot cou crb crc cre cri crn cro crr crt cru ctb ctc cte cti ctn cto ctr ctt ctu cub cuc cue cui cun cuo cur cut cuu ebb ebc ebe ebi ebn ebo ebr ebt ebu ec- ecb ecc ece eci ecn eco ecr ect ecu eeb eec eee een eeo eer eet eib eic eie eii ein eio eir eit eiu en- enb enc ene eni enn eno enr ent enu eo- eob eoc eoe eoi eon eoo eor eot eou erb erc ere eri ern ero err ert eru etb etc ete eti etn eto etr ett etu eu- eub euc eue eui eun eur eut ibb ibc ibe ibi ibn ibo ibr ibt ibu icb icc ice ici icn ico icr ict icu ie- iec iee iei ien ier iet iib iic iie iii iin iio iir iit iiu in- inb inc ine ini inn ino inr int inu io- iob ioc ioe ioi ion ioo ior iot iou ir- irb irc ire iri irn iro irr irt iru itb itc ite iti itn ito itt itu iu- iub iuc iue iui iur iut n-i nbb nbc nbe nbi nbn nbo nbr nbt nbu ncb ncc nce nci ncn nco ncr nct ncu ne- neb nec nee nei nen neo ner net neu nib nic nie nii nin nio nir nit niu nnb nnc nne nni nnn nno nnt nnu no- nob noc noe noi non noo nor not nou nrb nrc nre nri nrn nro nrr nrt nru ntb ntc nte nti ntn nto ntr ntt ntu nub nuc nue nui nun nuo nur nut nuu o-i ob- obb obc obe obi obn obo obr obt obu oc- ocb occ oci ocn oco ocr oct ocu oeb oec oee oei oen oeo oer oet oib oic oie oii oin oio oir oit oiu on- onb onc one oni onn ono onr ont onu oo- oob ooc ooi oon ooo oor oot or- orb orc ore ori orn oro orr ort oru ot- otb otc ote oti otn oto otr ott otu ou- ouc oue oui oun ouo our out rbb rbc rbe rbi rbn rbo rbr rbt rbu rcb rcc rce rci rcn rco rcr rct rcu re- reb rec ree rei ren reo rer ret reu rib ric rie rii rin rio rir rit rnb rnc rni rnn rno rnr rnt rnu rob roc roe roi ron roo ror rot rou rrb rrc rri rrn rrr rrt rru rtb rtc rte rti rtn rto rtr rtt rtu rub ruc rue rui run ruo rur rut ruu tbb tbc tbe tbi tbn tbo tbr tbt tbu tcb tcc tce tci tcn tco tcr tct tcu te- teb tec tee tei ten teo ter tet teu tib tic tie tii tin tio tir tit tiu tnb tnc tne tni tnn tno tnr tnt to- tob toc toe toi ton too tor tot tou trb trc tre tri trn tro trr trt tru ttb ttc tte tti ttn tto ttr ttt ttu tub tuc tue tui tun tuo tur tut tuu ubb ubc ube ubi ubn ubo ubr ubt ubu ucb ucc uce uci ucn uco ucr uct ucu ueb uec uee uei uen uer uet uib uic uie uii uin uio uir uit uiu un- unb unc une uni unn uno unr unt unu uob uoc uoe uon uoo uor uot ur- urb urc ure uri urn uro urr urt uru utb utc ute uti utn uto utr utt utu uuc uue uun uur uut uuu