-ic a-a a-b a-c a-i a-t aaa aab aac aae aai aan aao aat aau aax ab- aba abb abc abe abi abn abo abt abu abx ac- aca acb acc ace aci acn aco act acu acx aea aeb aec aee aei aen aeo aet aeu aex ai- aia aib aic aie aii ain aio ait aiu aix an- ana anb anc ane ani ann ano ant anu anx aoa aob aoc aoe aoi aon aoo aot aou aox at- ata atb atc ate ati atn ato att atu atx au- aua aub auc aue aui aun auo aut aux ax- axa axe axi axn axo axt axx b-u baa bab bac bae bai ban bao bat bau bax bba bbb bbc bbe bbi bbn bbo bbt bbu bbx bca bcb bcc bce bci bcn bco bct bcu bcx be- bea beb bec bee bei ben beo bet beu bex bi- bia bib bic bie bii bin bio bit biu bix bna bnb bnc bne bni bnn bno bnt bnu bnx boa bob boc boe boi bon boo bot bou box bta btb btc bte bti btn bto btt btu btx bua bub buc bue bui bun buo but buu bux bxb bxi bxn bxo bxx c-- caa cab cac cae cai can cao cat cau cax cba cbb cbc cbe cbi cbn cbo cbt cbu cbx cca ccb ccc cce cci ccn cco cct ccu ccx ce- cea ceb cec cee cei cen ceo cet ceu cex ci- cia cib cic cie cii cin cio cit ciu cix cn- cna cnb cnc cne cni cnn cno cnt cnu cnx co- coa cob coc coe coi con coo cot cou cox cta ctb ctc cte cti ctn cto ctt ctu ctx cua cub cuc cue cui cun cuo cut cuu cxc cxi cxo cxt cxx eaa eab eac eae eai ean eao eat eau eax eba ebb ebc ebe ebi ebn ebo ebt ebu ebx ec- eca ecb ecc ece eci ecn eco ect ecu ecx eea eeb eec eee een eeo eet eex eia eib eic eie eii ein eio eit eiu eix 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 etx eu- eua eub euc eue eui eun eut eux ex- exa exc exe exi exo ext exu exx ia- iaa iab iac iae iai ian iao iat iau iba ibb ibc ibe ibi ibn ibo ibt ibu ibx ica icb icc ice ici icn ico ict icu ie- iea iec iee iei ien iet iex iia iib iic iie iii iin iio iit iiu iix in- ina inb inc ine ini inn ino int inu inx io- ioa iob ioc ioe ioi ion ioo iot iou ita itb itc ite iti itn ito itt itu itx iu- iua iub iuc iue iui iut ixc ixe ixi ixn n-i naa nab nac nae nai nan nao nat nau nax nba nbb nbc nbe nbi nbn nbo nbt nbu nbx nca ncb ncc nce nci ncn nco nct ncu ncx ne- nea neb nec nee nei nen neo net neu nex nia nib nic nie nii nin nio nit niu nix nna nnb nnc nne nni nnn nno nnt nnu no- noa nob noc noe noi non noo not nou nox nta ntb ntc nte nti ntn nto ntt ntu ntx nua nub nuc nue nui nun nuo nut nuu nux nxc nxt o-i oaa oab oac oae oai oan oao oat oau oax ob- oba obb obc obe obi obn obo obt obu obx oc- oca ocb occ oci ocn oco oct ocu ocx oea oeb oec oee oei oen oeo oet oex oia oib oic oie oii oin oio oit oiu on- ona onb onc one oni onn ono ont onu onx oo- ooa oob ooc ooi oon ooo oot oox ot- ota otb otc ote oti otn oto ott otu ou- oua ouc oue oui oun ouo out ox- oxa oxb oxc oxi oxn oxo oxt oxx t-x taa tab tac tae tai tan tao tat tau tax tba tbb tbc tbe tbi tbn tbo tbt tbu tca tcb tcc tce tci tcn tco tct tcu tcx te- tea teb tec tee tei ten teo tet teu tex tia tib tic tie tii tin tio tit tiu tix tna tnb tnc tne tni tnn tno tnt tnx to- toa tob toc toe toi ton too tot tou tox tta ttb ttc tte tti ttn tto ttt ttu ttx tua tub tuc tue tui tun tuo tut tuu tux txe txi txn txt txu ua- uaa uab uac uae uai uan uao uat uau uba ubb ubc ube ubi ubn ubo ubt ubu ubx 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 unx uoa uob uoc uoe uon uoo uot uox uta utb utc ute uti utn uto utt utu utx uua uuc uue uun uut uuu uxb uxc uxo uxt uxu xaa xac xan xat xau xbc xbe xbx xcb xci xcx xee xen xet xeu xex xia xic xie xii xin xio xit xiu xix xna xnc xno xnu xoa xoc xoi xon xoo xot xox xtc xti xtx xue xui xun xxi xxo xxx