-ic a-a a-b a-c a-i a-t aaa aab aac aae aai aan aao aat aau ab- aba abb abc abe abi abn abo abt abu ac- aca acb acc ace aci acn aco act acu aea aeb aec aee aei aen aeo aet aeu ai- aia aib aic aie aii ain aio ait aiu an- ana anb anc ane ani ann ano ant anu aoa aob aoc aoe aoi aon aoo aot aou at- ata atb atc ate ati atn ato att atu au- aua aub auc aue aui aun auo aut b-u baa bab bac bae bai ban bao bat bau bba bbb bbc bbe bbi bbn bbo bbt bbu bca bcb bcc bce bci bcn bco bct bcu be- bea beb bec bee bei ben beo bet beu bi- bia bib bic bie bii bin bio bit biu bna bnb bnc bne bni bnn bno bnt bnu boa bob boc boe boi bon boo bot bou bta btb btc bte bti btn bto btt btu bua bub buc bue bui bun buo but buu c-- caa cab cac cae cai can cao cat cau cba cbb cbc cbe cbi cbn cbo cbt cbu cca ccb ccc cce cci ccn cco cct ccu ce- cea ceb cec cee cei cen ceo cet ceu ci- cia cib cic cie cii cin cio cit ciu cn- cna cnb cnc cne cni cnn cno cnt cnu co- coa cob coc coe coi con coo cot cou cta ctb ctc cte cti ctn cto ctt ctu cua cub cuc cue cui cun cuo cut cuu eaa eab eac eae eai ean eao eat eau eba ebb ebc ebe ebi ebn ebo ebt ebu ec- eca ecb ecc ece eci ecn eco ect ecu eea eeb eec eee een eeo eet eia eib eic eie eii ein eio eit eiu en- ena enb enc ene eni enn eno ent enu eo- eoa eob eoc eoe eoi eon eoo eot eou eta etb etc ete eti etn eto ett etu eu- eua eub euc eue eui eun eut ia- iaa iab iac iae iai ian iao iat iau iba ibb ibc ibe ibi ibn ibo ibt ibu ica icb icc ice ici icn ico ict icu ie- iea iec iee iei ien iet iia iib iic iie iii iin iio iit iiu in- ina inb inc ine ini inn ino int inu io- ioa iob ioc ioe ioi ion ioo iot iou ita itb itc ite iti itn ito itt itu iu- iua iub iuc iue iui iut n-i naa nab nac nae nai nan nao nat nau nba nbb nbc nbe nbi nbn nbo nbt nbu nca ncb ncc nce nci ncn nco nct ncu ne- nea neb nec nee nei nen neo net neu nia nib nic nie nii nin nio nit niu nna nnb nnc nne nni nnn nno nnt nnu no- noa nob noc noe noi non noo not nou nta ntb ntc nte nti ntn nto ntt ntu nua nub nuc nue nui nun nuo nut nuu o-i oaa oab oac oae oai oan oao oat oau ob- oba obb obc obe obi obn obo obt obu oc- oca ocb occ oci ocn oco oct ocu oea oeb oec oee oei oen oeo oet oia oib oic oie oii oin oio oit oiu on- ona onb onc one oni onn ono ont onu oo- ooa oob ooc ooi oon ooo oot ot- ota otb otc ote oti otn oto ott otu ou- oua ouc oue oui oun ouo out taa tab tac tae tai tan tao tat tau tba tbb tbc tbe tbi tbn tbo tbt tbu tca tcb tcc tce tci tcn tco tct tcu te- tea teb tec tee tei ten teo tet teu tia tib tic tie tii tin tio tit tiu tna tnb tnc tne tni tnn tno tnt to- toa tob toc toe toi ton too tot tou tta ttb ttc tte tti ttn tto ttt ttu tua tub tuc tue tui tun tuo tut tuu ua- uaa uab uac uae uai uan uao uat uau uba ubb ubc ube ubi ubn ubo ubt ubu uca ucb ucc uce uci ucn uco uct ucu uea ueb uec uee uei uen uet uia uib uic uie uii uin uio uit uiu un- una unb unc une uni unn uno unt unu uoa uob uoc uoe uon uoo uot uta utb utc ute uti utn uto utt utu uua uuc uue uun uut uuu