-ic a-a a-b a-c a-i a-t aaa aab aac aae aaf aai aan aat aav ab- aba abb abc abe abf abi abn abt abv ac- aca acb acc ace acf aci acn act acv aea aeb aec aee aef aei aen aet aev af- afa afb afc afe aff afi afn aft afv ai- aia aib aic aie aif aii ain ait aiv an- ana anb anc ane anf ani ann ant anv at- ata atb atc ate atf ati atn att atv av- ava avb avc ave avf avi avn avt baa bab bac bae baf bai ban bat bav bba bbb bbc bbe bbf bbi bbn bbt bca bcb bcc bce bcf bci bcn bct bcv be- bea beb bec bee bef bei ben bet bev bfa bfb bfc bfe bff bfi bfn bft bfv bi- bia bib bic bie bif bii bin bit biv bna bnb bnc bne bnf bni bnn bnt bnv bta btb btc bte btf bti btn btt btv bva bvb bvc bve bvi bvn bvt bvv c-- caa cab cac cae caf cai can cat cav cba cbb cbc cbe cbf cbi cbn cbt cbv cca ccb ccc cce ccf cci ccn cct ccv ce- cea ceb cec cee cef cei cen cet cev cfa cfb cfc cfe cff cfi cfn cft cfv ci- cia cib cic cie cif cii cin cit civ cn- cna cnb cnc cne cnf cni cnn cnt cnv cta ctb ctc cte ctf cti ctn ctt ctv cva cvb cvc cve cvf cvi cvn cvt cvv eaa eab eac eae eaf eai ean eat eav eba ebb ebc ebe ebf ebi ebn ebt ebv ec- eca ecb ecc ece ecf eci ecn ect ecv eea eeb eec eee eef een eet eev ef- efa efb efc efe eff efi eft eia eib eic eie eif eii ein eit eiv en- ena enb enc ene enf eni enn ent env eta etb etc ete etf eti etn ett etv eva evb evc eve evf evi evn evt evv faa fab fac fae faf fai fan fat fav fba fbb fbc fbe fbf fbi fbn fbt fca fcb fcc fce fcf fci fcn fct fcv fea feb fec fee fef fei fen fet fev ffa ffc ffe fff ffi ffn fft ffv fia fib fic fie fif fii fin fit fna fnb fnc fne fnf fni fnn fnt fnv fta ftb ftc fte ftf fti ftn ftt ftv fva fvc fvt i-f i-v ia- iaa iab iac iae iaf iai ian iat iav iba ibb ibc ibe ibf ibi ibn ibt ibv ica icb icc ice icf ici icn ict icv ie- iea iec iee ief iei ien iet iev ifa ifb ifc ife iff ifi ifn ift iia iib iic iie iif iii iin iit in- ina inb inc ine inf ini inn int inv ita itb itc ite itf iti itn itt itv iva ivb ivc ive ivf ivi ivt ivv n-i naa nab nac nae naf nai nan nat nav nba nbb nbc nbe nbf nbi nbn nbt nbv nca ncb ncc nce ncf nci ncn nct ncv ne- nea neb nec nee nef nei nen net nev nfa nfb nfc nfe nff nfi nfn nft nfv nia nib nic nie nif nii nin nit niv nna nnb nnc nne nnf nni nnn nnt nnv nta ntb ntc nte ntf nti ntn ntt ntv nva nvb nvc nve nvi nvn nvt nvv taa tab tac tae taf tai tan tat tav tba tbb tbc tbe tbf tbi tbn tbt tbv tca tcb tcc tce tcf tci tcn tct tcv te- tea teb tec tee tef tei ten tet tev tfa tfb tfc tfe tff tfi tfn tft tia tib tic tie tif tii tin tit tiv tna tnb tnc tne tnf tni tnn tnt tta ttb ttc tte ttf tti ttn ttt ttv tva tvb tvc tve tvf tvi tvn tvt v-a v-e vaa vab vac vae vai van vat vav vba vbc vbi vbv vca vcc vce vcf vci vcn vct vea veb vec vee vef vei ven vet vfa vfb vfc vff vfi vfn vft vfv vi- via vib vic vie vif vii vin vit viv vn- vna vnf vni vnv vta vtb vtc vte vti vtt vtv vva vvb vvc vvi vvt vvv