-ic a-a a-b a-c a-i aaa aab aac aai aao aar aav ab- aba abb abc abi abo abr abv ac- aca acb acc aci aco acr acv ai- aia aib aic aii aio air aiv aoa aob aoc aoi aoo aor aov ar- ara arb arc ari aro arr arv av- ava avb avc avi avo avr baa bab bac bai bao bar bav bba bbb bbc bbi bbo bbr bca bcb bcc bci bco bcr bcv bi- bia bib bic bii bio bir biv boa bob boc boi boo bor bov bra brb bri bro brr brv bva bvb bvc bvi bvo bvr bvv c-- caa cab cac cai cao car cav cba cbb cbc cbi cbo cbr cbv cca ccb ccc cci cco ccr ccv ci- cia cib cic cii cio cir civ co- coa cob coc coi coo cor cov cra crb crc cri cro crr crv cva cvb cvc cvi cvo cvr cvv i-v ia- iaa iab iac iai iao iar iav iba ibb ibc ibi ibo ibr ibv ica icb icc ici ico icr icv iia iib iic iii iio iir io- ioa iob ioc ioi ioo ior iov ir- ira irb irc iri iro irr irv iva ivb ivc ivi ivo ivr ivv o-i oaa oab oac oai oao oar oav ob- oba obb obc obi obo obr obv oc- oca ocb occ oci oco ocr ocv oia oib oic oii oio oir oiv oo- ooa oob ooc ooi ooo oor oov or- ora orb orc ori oro orr orv ov- ova ovb ovc ovi ovo ovv ra- raa rab rac rai rao rar rav rba rbb rbc rbi rbo rbr rca rcb rcc rci rco rcr rcv ria rib ric rii rio rir riv roa rob roc roi roo ror rov rra rrb rrc rri rrr rva rvb rvc rvi rvo rvr rvv v-a vaa vab vac vai vao var vav vba vbc vbi vbo vbr vbv vca vcc vci vco vcr vi- via vib vic vii vio vir viv voa vob voc voi voo vor vov vra vrb vrc vri vrr vva vvb vvc vvi vvo vvr vvv