-ic a-a a-b a-c a-i a-t aaa aab aac aae aai aao aat aav ab- aba abb abc abe abi abo abt abv ac- aca acb acc ace aci aco act acv aea aeb aec aee aei aeo aet aev ai- aia aib aic aie aii aio ait aiv aoa aob aoc aoe aoi aoo aot aov at- ata atb atc ate ati ato att atv av- ava avb avc ave avi avo avt baa bab bac bae bai bao bat bav bba bbb bbc bbe bbi bbo bbt bca bcb bcc bce bci bco bct bcv be- bea beb bec bee bei beo bet bev bi- bia bib bic bie bii bio bit biv boa bob boc boe boi boo bot bov bta btb btc bte bti bto btt btv bva bvb bvc bve bvi bvo bvt bvv c-- caa cab cac cae cai cao cat cav cba cbb cbc cbe cbi cbo cbt cbv cca ccb ccc cce cci cco cct ccv ce- cea ceb cec cee cei ceo cet cev ci- cia cib cic cie cii cio cit civ co- coa cob coc coe coi coo cot cov cta ctb ctc cte cti cto ctt ctv cva cvb cvc cve cvi cvo cvt cvv eaa eab eac eae eai eao eat eav eba ebb ebc ebe ebi ebo ebt ebv ec- eca ecb ecc ece eci eco ect ecv eea eeb eec eee eeo eet eev eia eib eic eie eii eio eit eiv eo- eoa eob eoc eoe eoi eoo eot eta etb etc ete eti eto ett etv eva evb evc eve evi evo evt evv i-v ia- iaa iab iac iae iai iao iat iav iba ibb ibc ibe ibi ibo ibt ibv ica icb icc ice ici ico ict icv ie- iea iec iee iei iet iev iia iib iic iie iii iio iit io- ioa iob ioc ioe ioi ioo iot iov ita itb itc ite iti ito itt itv iva ivb ivc ive ivi ivo ivt ivv o-i oaa oab oac oae oai oao oat oav ob- oba obb obc obe obi obo obt obv oc- oca ocb occ oci oco oct ocv oea oeb oec oee oei oeo oet oia oib oic oie oii oio oit oiv oo- ooa oob ooc ooi ooo oot oov ot- ota otb otc ote oti oto ott otv ov- ova ovb ovc ove ovi ovo ovv taa tab tac tae tai tao tat tav tba tbb tbc tbe tbi tbo tbt tbv tca tcb tcc tce tci tco tct tcv te- tea teb tec tee tei teo tet tev tia tib tic tie tii tio tit tiv to- toa tob toc toe toi too tot tov tta ttb ttc tte tti tto ttt ttv tva tvb tvc tve tvi tvo tvt v-a v-e vaa vab vac vae vai vao vat vav vba vbc vbi vbo vbv vca vcc vce vci vco vct vea veb vec vee vei veo vet vi- via vib vic vie vii vio vit viv voa vob voc voe voi voo vot vov vta vtb vtc vte vti vto vtt vtv vva vvb vvc vvi vvo vvt vvv