-ic a-a a-b a-c a-i a-t aaa aab aac aad aai aan aat aau ab- aba abb abc abd abi abn abt abu ac- aca acb acc acd aci acn act acu ad- ada adb adc add adi adn adt adu ai- aia aib aic aid aii ain ait aiu an- ana anb anc and ani ann ant anu at- ata atb atc atd ati atn att atu au- aua aub auc aud aui aun aut b-u baa bab bac bad bai ban bat bau bba bbb bbc bbd bbi bbn bbt bbu bca bcb bcc bcd bci bcn bct bcu bda bdb bdc bdd bdi bdt bdu bi- bia bib bic bid bii bin bit biu bna bnb bnc bnd bni bnn bnt bnu bta btb btc btd bti btn btt btu bua bub buc bud bui bun but buu c-- caa cab cac cad cai can cat cau cba cbb cbc cbd cbi cbn cbt cbu cca ccb ccc ccd cci ccn cct ccu cda cdb cdc cdd cdi cdn cdt cdu ci- cia cib cic cid cii cin cit ciu cn- cna cnb cnc cnd cni cnn cnt cnu cta ctb ctc ctd cti ctn ctt ctu cua cub cuc cud cui cun cut cuu daa dab dac dad dai dan dat dau dba dbb dbc dbd dbi dbn dbt dbu dca dcb dcc dcd dci dcn dct dcu dda ddb ddc ddd ddi ddn ddt ddu di- dia dib dic did dii din dit diu dna dnb dnc dnd dni dnn dnt dta dtb dtc dtd dti dtn dtt dtu dua dub duc dud dui dun dut i-d ia- iaa iab iac iad iai ian iat iau iba ibb ibc ibd ibi ibn ibt ibu ica icb icc icd ici icn ict icu ida idb idc idd idi idn idt idu iia iib iic iid iii iin iit iiu in- ina inb inc ind ini inn int inu ita itb itc itd iti itn itt itu iu- iua iub iuc iud iui iut n-i naa nab nac nad nai nan nat nau nba nbb nbc nbd nbi nbn nbt nbu nca ncb ncc ncd nci ncn nct ncu nda ndb ndc ndd ndi ndn ndt ndu nia nib nic nid nii nin nit niu nna nnb nnc nni nnn nnt nnu nta ntb ntc ntd nti ntn ntt ntu nua nub nuc nud nui nun nut nuu taa tab tac tad tai tan tat tau tba tbb tbc tbd tbi tbn tbt tbu tca tcb tcc tcd tci tcn tct tcu tda tdb tdc tdd tdi tdn tdt tdu tia tib tic tid tii tin tit tiu tna tnb tnc tnd tni tnn tnt tta ttb ttc ttd tti ttn ttt ttu tua tub tuc tud tui tun tut tuu ua- uaa uab uac uad uai uan uat uau uba ubb ubc ubi ubn ubt ubu uca ucb ucc ucd uci ucn uct ucu uda udb udc udd udi udn udt udu uia uib uic uid uii uin uit uiu un- una unb unc und uni unn unt unu uta utb utc utd uti utn utt utu uua uuc uun uut uuu