-ic a-a a-b a-c a-i a-t aaa aab aac aai aan aao aat aau ab- aba abb abc abi abn abo abt abu ac- aca acb acc aci acn aco act acu ai- aia aib aic aii ain aio ait aiu an- ana anb anc ani ann ano ant anu aoa aob aoc aoi aon aoo aot aou at- ata atb atc ati atn ato att atu au- aua aub auc aui aun auo aut b-u baa bab bac bai ban bao bat bau bba bbb bbc bbi bbn bbo bbt bbu bca bcb bcc bci bcn bco bct bcu bi- bia bib bic bii bin bio bit biu bna bnb bnc bni bnn bno bnt bnu boa bob boc boi bon boo bot bou bta btb btc bti btn bto btt btu bua bub buc bui bun buo but buu c-- caa cab cac cai can cao cat cau cba cbb cbc cbi cbn cbo cbt cbu cca ccb ccc cci ccn cco cct ccu ci- cia cib cic cii cin cio cit ciu cn- cna cnb cnc cni cnn cno cnt cnu co- coa cob coc coi con coo cot cou cta ctb ctc cti ctn cto ctt ctu cua cub cuc cui cun cuo cut cuu ia- iaa iab iac iai ian iao iat iau iba ibb ibc ibi ibn ibo ibt ibu ica icb icc ici icn ico ict icu iia iib iic iii iin iio iit iiu in- ina inb inc ini inn ino int inu io- ioa iob ioc ioi ion ioo iot iou ita itb itc iti itn ito itt itu iu- iua iub iuc iui iut n-i naa nab nac nai nan nao nat nau nba nbb nbc nbi nbn nbo nbt nbu nca ncb ncc nci ncn nco nct ncu nia nib nic nii nin nio nit niu nna nnb nnc nni nnn nno nnt nnu no- noa nob noc noi non noo not nou nta ntb ntc nti ntn nto ntt ntu nua nub nuc nui nun nuo nut nuu o-i oaa oab oac oai oan oao oat oau ob- oba obb obc obi obn obo obt obu oc- oca ocb occ oci ocn oco oct ocu oia oib oic oii oin oio oit oiu on- ona onb onc oni onn ono ont onu oo- ooa oob ooc ooi oon ooo oot ot- ota otb otc oti otn oto ott otu ou- oua ouc oui oun ouo out taa tab tac tai tan tao tat tau tba tbb tbc tbi tbn tbo tbt tbu tca tcb tcc tci tcn tco tct tcu tia tib tic tii tin tio tit tiu tna tnb tnc tni tnn tno tnt to- toa tob toc toi ton too tot tou tta ttb ttc tti ttn tto ttt ttu tua tub tuc tui tun tuo tut tuu ua- uaa uab uac uai uan uao uat uau uba ubb ubc ubi ubn ubo ubt ubu uca ucb ucc uci ucn uco uct ucu uia uib uic uii uin uio uit uiu un- una unb unc uni unn uno unt unu uoa uob uoc uon uoo uot uta utb utc uti utn uto utt utu uua uuc uun uut uuu