-ic a-a a-b a-c a-i a-t aaa aab aac aai aak aan aao aat aau ab- aba abb abc abi abk abn abo abt abu ac- aca acb acc aci ack acn aco act acu ai- aia aib aic aii aik ain aio ait aiu aka akb akc aki akk akn ako aku an- ana anb anc ani ank ann ano ant anu aoa aob aoc aoi aok aon aoo aot aou at- ata atb atc ati atn ato att atu au- aua aub auc aui auk aun auo aut b-u baa bab bac bai bak ban bao bat bau bba bbb bbc bbi bbk bbn bbo bbt bbu bca bcb bcc bci bck bcn bco bct bcu bi- bia bib bic bii bik bin bio bit biu bka bkb bkc bkk bkn bko bkt bna bnb bnc bni bnk bnn bno bnt bnu boa bob boc boi bok bon boo bot bou bta btb btc bti btk btn bto btt btu bua bub buc bui buk bun buo but buu c-- caa cab cac cai cak can cao cat cau cba cbb cbc cbi cbk cbn cbo cbt cbu cca ccb ccc cci cck ccn cco cct ccu ci- cia cib cic cii cik cin cio cit ciu cka ckb ckc cki cko ckt cn- cna cnb cnc cni cnn cno cnt cnu co- coa cob coc coi cok con coo cot cou cta ctb ctc cti ctk ctn cto ctt ctu cua cub cuc cui cuk cun cuo cut cuu ia- iaa iab iac iai ian iao iat iau iba ibb ibc ibi ibk ibn ibo ibt ibu ica icb icc ici ick icn ico ict icu iia iib iic iii iin iio iit iiu ika ikb ikc iki ikk iko ikt iku in- ina inb inc ini ink inn ino int inu io- ioa iob ioc ioi ion ioo iot iou ita itb itc iti itk itn ito itt itu iu- iua iub iuc iui iut k-t ka- kaa kab kac kai kak kan kao kat kau kba kbb kbc kbi kbk kbn kbo kbu kca kcb kcc kci kck kcn kct kcu kia kib kic kii kik kin kio kit kiu kkb kkc kki kkk kkn kkt kku kn- kna knc kni knk knn kno knt knu koa kob koc koi kok kon koo kot kou kta ktb ktc ktk ktn kto ktt ktu kub kuc kui kuk kun kut kuu n-i naa nab nac nai nak nan nao nat nau nba nbb nbc nbi nbk nbn nbo nbt nbu nca ncb ncc nci nck ncn nco nct ncu nia nib nic nii nik nin nio nit niu nka nkc nki nkk nkn nko nkt nku nna nnb nnc nni nnk nnn nno nnt nnu no- noa nob noc noi nok non noo not nou nta ntb ntc nti ntk ntn nto ntt ntu nua nub nuc nui nuk nun nuo nut nuu o-i oaa oab oac oai oak oan oao oat oau ob- oba obb obc obi obk obn obo obt obu oc- oca ocb occ oci ock ocn oco oct ocu oia oib oic oii oik oin oio oit oiu oka okb okc oki okk oko oku on- ona onb onc oni onk onn ono ont onu oo- ooa oob ooc ooi ook oon ooo oot ot- ota otb otc oti otk otn oto ott otu ou- oua ouc oui ouk oun ouo out taa tab tac tai tak tan tao tat tau tba tbb tbc tbi tbk tbn tbo tbt tbu tca tcb tcc tci tck tcn tco tct tcu tia tib tic tii tik tin tio tit tiu tka tkb tkc tkk tko tkt tna tnb tnc tni tnk tnn tno tnt to- toa tob toc toi tok ton too tot tou tta ttb ttc tti ttk ttn tto ttt ttu tua tub tuc tui tuk tun tuo tut tuu ua- uaa uab uac uai uak uan uao uat uau uba ubb ubc ubi ubk ubn ubo ubt ubu uca ucb ucc uci uck ucn uco uct ucu uia uib uic uii uin uio uit uiu uka ukb ukc uki ukk ukn uku un- una unb unc uni unk unn uno unt unu uoa uob uoc uok uon uoo uot uta utb utc uti utk utn uto utt utu uua uuc uun uut uuu