-ic a-a a-b a-c a-i aaa aab aac aad aae aai aak aav ab- aba abb abc abd abe abi abk abv ac- aca acb acc acd ace aci ack acv ad- ada adb adc add ade adi adk adv aea aeb aec aed aee aei aek aev ai- aia aib aic aid aie aii aik aiv aka akb akc akd ake aki akk akv av- ava avb avc avd ave avi avk baa bab bac bad bae bai bak bav bba bbb bbc bbd bbe bbi bbk bca bcb bcc bcd bce bci bck bcv bda bdb bdc bdd bde bdi bdk bdv be- bea beb bec bed bee bei bek bev bi- bia bib bic bid bie bii bik biv bka bkb bkc bke bkk bkv bva bvb bvc bvd bve bvi bvk bvv c-- caa cab cac cad cae cai cak cav cba cbb cbc cbd cbe cbi cbk cbv cca ccb ccc ccd cce cci cck ccv cda cdb cdc cdd cde cdi cdk cdv ce- cea ceb cec ced cee cei cek cev ci- cia cib cic cid cie cii cik civ cka ckb ckc ckd cki cva cvb cvc cvd cve cvi cvk cvv daa dab dac dad dae dai dak dav dba dbb dbc dbd dbe dbi dbk dbv dca dcb dcc dcd dce dci dck dcv dda ddb ddc ddd dde ddi ddk de- dea deb dec ded dee dei dek dev di- dia dib dic did die dii dik div dka dkb dkc dke dki dkk dva dvb dvc dvd dve dvi dvk eaa eab eac ead eae eai eak eav eba ebb ebc ebd ebe ebi ebk ebv ec- eca ecb ecc ecd ece eci eck ecv ed- eda edb edc edd ede edi edk eea eeb eec eed eee eek eev eia eib eic eid eie eii eik eiv eka ekb ekc ekd eke eki ekv eva evb evc evd eve evi evv i-d i-v ia- iaa iab iac iad iae iai iav iba ibb ibc ibd ibe ibi ibk ibv ica icb icc icd ice ici ick icv ida idb idc idd ide idi idk idv ie- iea iec ied iee iei iek iev iia iib iic iid iie iii ika ikb ikc ike iki ikk ikv iva ivb ivc ivd ive ivi ivv ka- kaa kab kac kad kae kai kak kav kba kbb kbc kbd kbe kbi kbk kca kcb kcc kcd kce kci kck kda kdb kdc kde kdk ke- kea keb kec ked kee kei kek kev kia kib kic kid kie kii kik kiv kkb kkc kke kki kkk kkv kva kvb kvi kvk kvv v-a v-e vaa vab vac vad vae vai vak vav vba vbc vbd vbi vbk vbv vca vcc vcd vce vci vdb vdc vdd vde vdi vdk vdv vea veb vec ved vee vei vek vi- via vib vic vid vie vii vik viv vka vkb vva vvb vvc vvi vvv