-ic a-a a-b a-c a-i aaa aab aac aae aai aao aav ab- aba abb abc abe abi abo abv ac- aca acb acc ace aci aco acv aea aeb aec aee aei aeo aev ai- aia aib aic aie aii aio aiv aoa aob aoc aoe aoi aoo aov av- ava avb avc ave avi avo baa bab bac bae bai bao bav bba bbb bbc bbe bbi bbo bca bcb bcc bce bci bco bcv be- bea beb bec bee bei beo bev bi- bia bib bic bie bii bio biv boa bob boc boe boi boo bov bva bvb bvc bve bvi bvo bvv c-- caa cab cac cae cai cao cav cba cbb cbc cbe cbi cbo cbv cca ccb ccc cce cci cco ccv ce- cea ceb cec cee cei ceo cev ci- cia cib cic cie cii cio civ co- coa cob coc coe coi coo cov cva cvb cvc cve cvi cvo cvv eaa eab eac eae eai eao eav eba ebb ebc ebe ebi ebo ebv ec- eca ecb ecc ece eci eco ecv eea eeb eec eee eeo eev eia eib eic eie eii eio eiv eo- eoa eob eoc eoe eoi eoo eva evb evc eve evi evo evv i-v ia- iaa iab iac iae iai iao iav iba ibb ibc ibe ibi ibo ibv ica icb icc ice ici ico icv ie- iea iec iee iei iev iia iib iic iie iii iio io- ioa iob ioc ioe ioi ioo iov iva ivb ivc ive ivi ivo ivv o-i oaa oab oac oae oai oao oav ob- oba obb obc obe obi obo obv oc- oca ocb occ oci oco ocv oea oeb oec oee oei oeo oia oib oic oie oii oio oiv oo- ooa oob ooc ooi ooo oov ov- ova ovb ovc ove ovi ovo ovv v-a v-e vaa vab vac vae vai vao vav vba vbc vbi vbo vbv vca vcc vce vci vco vea veb vec vee vei veo vi- via vib vic vie vii vio viv voa vob voc voe voi voo vov vva vvb vvc vvi vvo vvv