-ic a-a a-b a-c a-i a-t aaa aab aac aad aae aai aat aav ab- aba abb abc abd abe abi abt abv ac- aca acb acc acd ace aci act acv ad- ada adb adc add ade adi adt adv aea aeb aec aed aee aei aet aev ai- aia aib aic aid aie aii ait aiv at- ata atb atc atd ate ati att atv av- ava avb avc avd ave avi avt baa bab bac bad bae bai bat bav bba bbb bbc bbd bbe bbi bbt bca bcb bcc bcd bce bci bct bcv bda bdb bdc bdd bde bdi bdt bdv be- bea beb bec bed bee bei bet bev bi- bia bib bic bid bie bii bit biv bta btb btc btd bte bti btt btv bva bvb bvc bvd bve bvi bvt bvv c-- caa cab cac cad cae cai cat cav cba cbb cbc cbd cbe cbi cbt cbv cca ccb ccc ccd cce cci cct ccv cda cdb cdc cdd cde cdi cdt cdv ce- cea ceb cec ced cee cei cet cev ci- cia cib cic cid cie cii cit civ cta ctb ctc ctd cte cti ctt ctv cva cvb cvc cvd cve cvi cvt cvv daa dab dac dad dae dai dat dav dba dbb dbc dbd dbe dbi dbt dbv dca dcb dcc dcd dce dci dct dcv dda ddb ddc ddd dde ddi ddt de- dea deb dec ded dee dei det dev di- dia dib dic did die dii dit div dta dtb dtc dtd dte dti dtt dtv dva dvb dvc dvd dve dvi dvt eaa eab eac ead eae eai eat eav eba ebb ebc ebd ebe ebi ebt ebv ec- eca ecb ecc ecd ece eci ect ecv ed- eda edb edc edd ede edi edt eea eeb eec eed eee eet eev eia eib eic eid eie eii eit eiv eta etb etc etd ete eti ett etv eva evb evc evd eve evi evt evv i-d i-v ia- iaa iab iac iad iae iai iat iav iba ibb ibc ibd ibe ibi ibt ibv ica icb icc icd ice ici ict icv ida idb idc idd ide idi idt idv ie- iea iec ied iee iei iet iev iia iib iic iid iie iii iit ita itb itc itd ite iti itt itv iva ivb ivc ivd ive ivi ivt ivv taa tab tac tad tae tai tat tav tba tbb tbc tbd tbe tbi tbt tbv tca tcb tcc tcd tce tci tct tcv tda tdb tdc tdd tde tdi tdt tdv te- tea teb tec ted tee tei tet tev tia tib tic tid tie tii tit tiv tta ttb ttc ttd tte tti ttt ttv tva tvb tvc tvd tve tvi tvt v-a v-e vaa vab vac vad vae vai vat vav vba vbc vbd vbi vbv vca vcc vcd vce vci vct vdb vdc vdd vde vdi vdt vdv vea veb vec ved vee vei vet vi- via vib vic vid vie vii vit viv vta vtb vtc vte vti vtt vtv vva vvb vvc vvi vvt vvv