-ic a-a a-b a-c a-i a-t aaa aab aac aai aan aao aar aat aau ab- aba abb abc abi abn abo abr abt abu ac- aca acb acc aci acn aco acr act acu ai- aia aib aic aii ain aio air ait aiu an- ana anb anc ani ann ano anr ant anu aoa aob aoc aoi aon aoo aor aot aou ar- ara arb arc ari arn aro arr art aru at- ata atb atc ati atn ato atr att atu au- aua aub auc aui aun auo aur aut b-u baa bab bac bai ban bao bar bat bau bba bbb bbc bbi bbn bbo bbr bbt bbu bca bcb bcc bci bcn bco bcr bct bcu bi- bia bib bic bii bin bio bir bit biu bna bnb bnc bni bnn bno bnr bnt bnu boa bob boc boi bon boo bor bot bou bra brb bri brn bro brr brt bru bta btb btc bti btn bto btr btt btu bua bub buc bui bun buo bur but buu c-- caa cab cac cai can cao car cat cau cba cbb cbc cbi cbn cbo cbr cbt cbu cca ccb ccc cci ccn cco ccr cct ccu ci- cia cib cic cii cin cio cir cit ciu cn- cna cnb cnc cni cnn cno cnr cnt cnu co- coa cob coc coi con coo cor cot cou cra crb crc cri crn cro crr crt cru cta ctb ctc cti ctn cto ctr ctt ctu cua cub cuc cui cun cuo cur cut cuu ia- iaa iab iac iai ian iao iar iat iau iba ibb ibc ibi ibn ibo ibr ibt ibu ica icb icc ici icn ico icr ict icu iia iib iic iii iin iio iir iit iiu in- ina inb inc ini inn ino inr int inu io- ioa iob ioc ioi ion ioo ior iot iou ir- ira irb irc iri irn iro irr irt iru ita itb itc iti itn ito itt itu iu- iua iub iuc iui iur iut n-i naa nab nac nai nan nao nar nat nau nba nbb nbc nbi nbn nbo nbr nbt nbu nca ncb ncc nci ncn nco ncr nct ncu nia nib nic nii nin nio nir nit niu nna nnb nnc nni nnn nno nnt nnu no- noa nob noc noi non noo nor not nou nra nrb nrc nri nrn nro nrr nrt nru nta ntb ntc nti ntn nto ntr ntt ntu nua nub nuc nui nun nuo nur nut nuu o-i oaa oab oac oai oan oao oar oat oau ob- oba obb obc obi obn obo obr obt obu oc- oca ocb occ oci ocn oco ocr oct ocu oia oib oic oii oin oio oir oit oiu on- ona onb onc oni onn ono onr ont onu oo- ooa oob ooc ooi oon ooo oor oot or- ora orb orc ori orn oro orr ort oru ot- ota otb otc oti otn oto otr ott otu ou- oua ouc oui oun ouo our out ra- raa rab rac rai ran rao rar rat rau rba rbb rbc rbi rbn rbo rbr rbt rbu rca rcb rcc rci rcn rco rcr rct rcu ria rib ric rii rin rio rir rit rna rnb rnc rni rnn rno rnr rnt rnu roa rob roc roi ron roo ror rot rou rra rrb rrc rri rrn rrr rrt rru rta rtb rtc rti rtn rto rtr rtt rtu rua rub ruc rui run ruo rur rut ruu taa tab tac tai tan tao tar tat tau tba tbb tbc tbi tbn tbo tbr tbt tbu tca tcb tcc tci tcn tco tcr tct tcu tia tib tic tii tin tio tir tit tiu tna tnb tnc tni tnn tno tnr tnt to- toa tob toc toi ton too tor tot tou tra trb trc tri trn tro trr trt tru tta ttb ttc tti ttn tto ttr ttt ttu tua tub tuc tui tun tuo tur tut tuu ua- uaa uab uac uai uan uao uar uat uau uba ubb ubc ubi ubn ubo ubr ubt ubu uca ucb ucc uci ucn uco ucr uct ucu uia uib uic uii uin uio uir uit uiu un- una unb unc uni unn uno unr unt unu uoa uob uoc uon uoo uor uot ur- ura urb urc uri urn uro urr urt uru uta utb utc uti utn uto utr utt utu uua uuc uun uur uut uuu