-ic a-a a-b a-c a-i a-t aaa aab aac aaf aai aan aao aat aau ab- aba abb abc abf abi abn abo abt abu ac- aca acb acc acf aci acn aco act acu af- afa afb afc aff afi afn afo aft afu ai- aia aib aic aif aii ain aio ait aiu an- ana anb anc anf ani ann ano ant anu aoa aob aoc aof aoi aon aoo aot aou at- ata atb atc atf ati atn ato att atu au- aua aub auc auf aui aun auo aut b-u baa bab bac baf bai ban bao bat bau bba bbb bbc bbf bbi bbn bbo bbt bbu bca bcb bcc bcf bci bcn bco bct bcu bfa bfb bfc bff bfi bfn bfo bft bfu bi- bia bib bic bif bii bin bio bit biu bna bnb bnc bnf bni bnn bno bnt bnu boa bob boc bof boi bon boo bot bou bta btb btc btf bti btn bto btt btu bua bub buc buf bui bun buo but buu c-- caa cab cac caf cai can cao cat cau cba cbb cbc cbf cbi cbn cbo cbt cbu cca ccb ccc ccf cci ccn cco cct ccu cfa cfb cfc cff cfi cfn cfo cft cfu ci- cia cib cic cif cii cin cio cit ciu cn- cna cnb cnc cnf cni cnn cno cnt cnu co- coa cob coc cof coi con coo cot cou cta ctb ctc ctf cti ctn cto ctt ctu cua cub cuc cuf cui cun cuo cut cuu faa fab fac faf fai fan fao fat fau fba fbb fbc fbf fbi fbn fbo fbt fbu fca fcb fcc fcf fci fcn fco fct fcu ffa ffc fff ffi ffn ffo fft ffu fia fib fic fif fii fin fit fiu fna fnb fnc fnf fni fnn fnt fnu foa fob foc fof foi fon foo fot fou fta ftb ftc ftf fti ftn fto ftt ftu fua fub fuf fui fun fuo fut fuu i-f ia- iaa iab iac iaf iai ian iao iat iau iba ibb ibc ibf ibi ibn ibo ibt ibu ica icb icc icf ici icn ico ict icu ifa ifb ifc iff ifi ifn ifo ift ifu iia iib iic iif iii iin iio iit iiu in- ina inb inc inf ini inn ino int inu io- ioa iob ioc iof ioi ion ioo iot iou ita itb itc itf iti itn ito itt itu iu- iua iub iuc iui iut n-i naa nab nac naf nai nan nao nat nau nba nbb nbc nbf nbi nbn nbo nbt nbu nca ncb ncc ncf nci ncn nco nct ncu nfa nfb nfc nff nfi nfn nfo nft nfu nia nib nic nif nii nin nio nit niu nna nnb nnc nnf nni nnn nno nnt nnu no- noa nob noc nof noi non noo not nou nta ntb ntc ntf nti ntn nto ntt ntu nua nub nuc nui nun nuo nut nuu o-i oaa oab oac oaf oai oan oao oat oau ob- oba obb obc obf obi obn obo obt obu oc- oca ocb occ ocf oci ocn oco oct ocu of- ofa ofb ofc off ofi ofn ofo oft ofu oia oib oic oif oii oin oio oit oiu on- ona onb onc onf oni onn ono ont onu oo- ooa oob ooc oof ooi oon ooo oot ot- ota otb otc otf oti otn oto ott otu ou- oua ouc ouf oui oun ouo out taa tab tac taf tai tan tao tat tau tba tbb tbc tbf tbi tbn tbo tbt tbu tca tcb tcc tcf tci tcn tco tct tcu tfa tfb tfc tff tfi tfn tfo tft tfu tia tib tic tif tii tin tio tit tiu tna tnb tnc tnf tni tnn tno tnt to- toa tob toc tof toi ton too tot tou tta ttb ttc ttf tti ttn tto ttt ttu tua tub tuc tuf tui tun tuo tut tuu ua- uaa uab uac uaf uai uan uao uat uau uba ubb ubc ubf ubi ubn ubo ubt ubu uca ucb ucc ucf uci ucn uco uct ucu ufa ufc uff ufi ufn ufo uft ufu uia uib uic uif uii uin uio uit uiu un- una unb unc unf uni unn uno unt unu uoa uob uoc uon uoo uot uta utb utc utf uti utn uto utt utu uua uuc uun uut uuu