-er -ic a-a a-b a-c a-i a-t aaa aab aac aae aai aan aao aar aat aau ab- aba abb abc abe abi abn abo abr abt abu ac- aca acb acc ace aci acn aco acr act acu aea aeb aec aee aei aen aeo aer aet aeu ai- aia aib aic aie aii ain aio air ait aiu an- ana anb anc ane ani ann ano anr ant anu aoa aob aoc aoe aoi aon aoo aor aot aou ar- ara arb arc are ari arn aro arr art aru at- ata atb atc ate ati atn ato atr att atu au- aua aub auc aue aui aun auo aur aut b-u baa bab bac bae bai ban bao bar bat bau bba bbb bbc bbe bbi bbn bbo bbr bbt bbu bca bcb bcc bce bci bcn bco bcr bct bcu be- bea beb bec bee bei ben beo ber bet beu bi- bia bib bic bie bii bin bio bir bit biu bna bnb bnc bne bni bnn bno bnr bnt bnu boa bob boc boe boi bon boo bor bot bou bra brb bre bri brn bro brr brt bru bta btb btc bte bti btn bto btr btt btu bua bub buc bue bui bun buo bur but buu c-- caa cab cac cae cai can cao car cat cau cba cbb cbc cbe cbi cbn cbo cbr cbt cbu cca ccb ccc cce cci ccn cco ccr cct ccu ce- cea ceb cec cee cei cen ceo cer cet ceu ci- cia cib cic cie cii cin cio cir cit ciu cn- cna cnb cnc cne cni cnn cno cnr cnt cnu co- coa cob coc coe coi con coo cor cot cou cra crb crc cre cri crn cro crr crt cru cta ctb ctc cte cti ctn cto ctr ctt ctu cua cub cuc cue cui cun cuo cur cut cuu eaa eab eac eae eai ean eao ear eat eau eba ebb ebc ebe ebi ebn ebo ebr ebt ebu ec- eca ecb ecc ece eci ecn eco ecr ect ecu eea eeb eec eee een eeo eer eet eia eib eic eie eii ein eio eir eit eiu en- ena enb enc ene eni enn eno enr ent enu eo- eoa eob eoc eoe eoi eon eoo eor eot eou era erb erc ere eri ern ero err ert eru eta etb etc ete eti etn eto etr ett etu eu- eua eub euc eue eui eun eur eut ia- iaa iab iac iae iai ian iao iar iat iau iba ibb ibc ibe ibi ibn ibo ibr ibt ibu ica icb icc ice ici icn ico icr ict icu ie- iea iec iee iei ien ier iet iia iib iic iie iii iin iio iir iit iiu in- ina inb inc ine ini inn ino inr int inu io- ioa iob ioc ioe ioi ion ioo ior iot iou ir- ira irb irc ire iri irn iro irr irt iru ita itb itc ite iti itn ito itt itu iu- iua iub iuc iue iui iur iut n-i naa nab nac nae nai nan nao nar nat nau nba nbb nbc nbe nbi nbn nbo nbr nbt nbu nca ncb ncc nce nci ncn nco ncr nct ncu ne- nea neb nec nee nei nen neo ner net neu nia nib nic nie nii nin nio nir nit niu nna nnb nnc nne nni nnn nno nnt nnu no- noa nob noc noe noi non noo nor not nou nra nrb nrc nre nri nrn nro nrr nrt nru nta ntb ntc nte nti ntn nto ntr ntt ntu nua nub nuc nue nui nun nuo nur nut nuu o-i oaa oab oac oae oai oan oao oar oat oau ob- oba obb obc obe obi obn obo obr obt obu oc- oca ocb occ oci ocn oco ocr oct ocu oea oeb oec oee oei oen oeo oer oet oia oib oic oie oii oin oio oir oit oiu on- ona onb onc one oni onn ono onr ont onu oo- ooa oob ooc ooi oon ooo oor oot or- ora orb orc ore ori orn oro orr ort oru ot- ota otb otc ote oti otn oto otr ott otu ou- oua ouc oue oui oun ouo our out ra- raa rab rac rae rai ran rao rar rat rau rba rbb rbc rbe rbi rbn rbo rbr rbt rbu rca rcb rcc rce rci rcn rco rcr rct rcu re- rea reb rec ree rei ren reo rer ret reu ria rib ric rie rii rin rio rir rit rna rnb rnc rni rnn rno rnr rnt rnu roa rob roc roe roi ron roo ror rot rou rra rrb rrc rri rrn rrr rrt rru rta rtb rtc rte rti rtn rto rtr rtt rtu rua rub ruc rue rui run ruo rur rut ruu taa tab tac tae tai tan tao tar tat tau tba tbb tbc tbe tbi tbn tbo tbr tbt tbu tca tcb tcc tce tci tcn tco tcr tct tcu te- tea teb tec tee tei ten teo ter tet teu tia tib tic tie tii tin tio tir tit tiu tna tnb tnc tne tni tnn tno tnr tnt to- toa tob toc toe toi ton too tor tot tou tra trb trc tre tri trn tro trr trt tru tta ttb ttc tte tti ttn tto ttr ttt ttu tua tub tuc tue tui tun tuo tur tut tuu ua- uaa uab uac uae uai uan uao uar uat uau uba ubb ubc ube ubi ubn ubo ubr ubt ubu uca ucb ucc uce uci ucn uco ucr uct ucu uea ueb uec uee uei uen uer uet uia uib uic uie uii uin uio uir uit uiu un- una unb unc une uni unn uno unr unt unu uoa uob uoc uoe uon uoo uor uot ur- ura urb urc ure uri urn uro urr urt