-ic a-a a-b a-c a-i aaa aab aac aad aai aav ab- aba abb abc abd abi abv ac- aca acb acc acd aci acv ad- ada adb adc add adi adv ai- aia aib aic aid aii aiv av- ava avb avc avd avi baa bab bac bad bai bav bba bbb bbc bbd bbi bca bcb bcc bcd bci bcv bda bdb bdc bdd bdi bdv bi- bia bib bic bid bii biv bva bvb bvc bvd bvi bvv c-- caa cab cac cad cai cav cba cbb cbc cbd cbi cbv cca ccb ccc ccd cci ccv cda cdb cdc cdd cdi cdv ci- cia cib cic cid cii civ cva cvb cvc cvd cvi cvv daa dab dac dad dai dav dba dbb dbc dbd dbi dbv dca dcb dcc dcd dci dcv dda ddb ddc ddd ddi di- dia dib dic did dii div dva dvb dvc dvd dvi i-d i-v ia- iaa iab iac iad iai iav iba ibb ibc ibd ibi ibv ica icb icc icd ici icv ida idb idc idd idi idv iia iib iic iid iii iva ivb ivc ivd ivi ivv v-a vaa vab vac vad vai vav vba vbc vbd vbi vbv vca vcc vcd vci vdb vdc vdd vdi vdv vi- via vib vic vid vii viv vva vvb vvc vvi vvv