-ic a-a a-b a-c a-i aaa aab aac aad aae aai aak aan aau ab- aba abb abc abd abe abi abk abn abu ac- aca acb acc acd ace aci ack acn acu ad- ada adb adc add ade adi adk adn adu aea aeb aec aed aee aei aek aen aeu ai- aia aib aic aid aie aii aik ain aiu aka akb akc akd ake aki akk akn aku an- ana anb anc and ane ani ank ann anu au- aua aub auc aud aue aui auk aun b-u baa bab bac bad bae bai bak ban bau bba bbb bbc bbd bbe bbi bbk bbn bbu bca bcb bcc bcd bce bci bck bcn bcu bda bdb bdc bdd bde bdi bdk bdu be- bea beb bec bed bee bei bek ben beu bi- bia bib bic bid bie bii bik bin biu bka bkb bkc bke bkk bkn bna bnb bnc bnd bne bni bnk bnn bnu bua bub buc bud bue bui buk bun buu c-- caa cab cac cad cae cai cak can cau cba cbb cbc cbd cbe cbi cbk cbn cbu cca ccb ccc ccd cce cci cck ccn ccu cda cdb cdc cdd cde cdi cdk cdn cdu ce- cea ceb cec ced cee cei cek cen ceu ci- cia cib cic cid cie cii cik cin ciu cka ckb ckc ckd cki cn- cna cnb cnc cnd cne cni cnn cnu cua cub cuc cud cue cui cuk cun cuu daa dab dac dad dae dai dak dan dau dba dbb dbc dbd dbe dbi dbk dbn dbu dca dcb dcc dcd dce dci dck dcn dcu dda ddb ddc ddd dde ddi ddk ddn ddu de- dea deb dec ded dee dei dek den deu di- dia dib dic did die dii dik din diu dka dkb dkc dke dki dkk dku dna dnb dnc dnd dne dni dnk dnn dua dub duc dud due dui duk dun eaa eab eac ead eae eai eak ean eau eba ebb ebc ebd ebe ebi ebk ebn ebu ec- eca ecb ecc ecd ece eci eck ecn ecu ed- eda edb edc edd ede edi edk edn edu eea eeb eec eed eee eek een eia eib eic eid eie eii eik ein eiu eka ekb ekc ekd eke eki eku en- ena enb enc end ene eni enk enn enu eu- eua eub euc eud eue eui eun i-d ia- iaa iab iac iad iae iai ian iau iba ibb ibc ibd ibe ibi ibk ibn ibu ica icb icc icd ice ici ick icn icu ida idb idc idd ide idi idk idn idu ie- iea iec ied iee iei iek ien iia iib iic iid iie iii iin iiu ika ikb ikc ike iki ikk iku in- ina inb inc ind ine ini ink inn inu iu- iua iub iuc iud iue iui ka- kaa kab kac kad kae kai kak kan kau kba kbb kbc kbd kbe kbi kbk kbn kbu kca kcb kcc kcd kce kci kck kcn kcu kda kdb kdc kde kdk kdu ke- kea keb kec ked kee kei kek ken kia kib kic kid kie kii kik kin kiu kkb kkc kke kki kkk kkn kku kn- kna knc knd kne kni knk knn knu kub kuc kud kue kui kuk kun kuu n-i naa nab nac nad nae nai nak nan nau nba nbb nbc nbd nbe nbi nbk nbn nbu nca ncb ncc ncd nce nci nck ncn ncu nda ndb ndc ndd nde ndi ndk ndn ndu ne- nea neb nec ned nee nei nek nen neu nia nib nic nid nie nii nik nin niu nka nkc nke nki nkk nkn nku nna nnb nnc nne nni nnk nnn nnu nua nub nuc nud nue nui nuk nun nuu ua- uaa uab uac uad uae uai uak uan uau uba ubb ubc ube ubi ubk ubn ubu uca ucb ucc ucd uce uci uck ucn ucu uda udb udc udd ude udi udk udn udu uea ueb uec ued uee uei uen uia uib uic uid uie uii uin uiu uka ukb ukc uke uki ukk ukn uku un- una unb unc und une uni unk unn unu uua uuc uue uun uuu