-ic a-a a-b a-c a-i aaa aab aac aag aai aao aar aav ab- aba abb abc abg abi abo abr abv ac- aca acb acc acg aci aco acr acv ag- aga agb agc agg agi ago agr agv ai- aia aib aic aig aii aio air aiv aoa aob aoc aog aoi aoo aor aov ar- ara arb arc arg ari aro arr arv av- ava avb avc avg avi avo avr baa bab bac bag bai bao bar bav bba bbb bbc bbg bbi bbo bbr bca bcb bcc bcg bci bco bcr bcv bga bgb bgc bgg bgi bgo bgr bgv bi- bia bib bic big bii bio bir biv boa bob boc bog boi boo bor bov bra brb brg bri bro brr brv bva bvb bvc bvg bvi bvo bvr bvv c-- caa cab cac cag cai cao car cav cba cbb cbc cbg cbi cbo cbr cbv cca ccb ccc ccg cci cco ccr ccv cga cgb cgc cgg cgi cgo cgr cgv ci- cia cib cic cig cii cio cir civ co- coa cob coc cog coi coo cor cov cra crb crc crg cri cro crr crv cva cvb cvc cvg cvi cvo cvr cvv gaa gab gac gag gai gao gar gav gba gbc gbg gbi gbo gbr gbv gca gcb gcc gcg gci gco gcr gga ggb ggc ggg ggi ggo ggr ggv gia gib gic gig gii gio gir giv goa gob goc gog goi goo gor gov gra grb grc grg gri gro grr grv gva gvb gvc gvg gvi gvo gvr i-v ia- iaa iab iac iag iai iao iar iav iba ibb ibc ibg ibi ibo ibr ibv ica icb icc icg ici ico icr icv iga igb igc igg igi igo igr iia iib iic iii iio iir io- ioa iob ioc iog ioi ioo ior iov ir- ira irb irc irg iri iro irr irv iva ivb ivc ivg ivi ivo ivr ivv o-i oaa oab oac oag oai oao oar oav ob- oba obb obc obg obi obo obr obv oc- oca ocb occ ocg oci oco ocr ocv oga ogc ogg ogi ogo oia oib oic oii oio oir oiv oo- ooa oob ooc oog ooi ooo oor oov or- ora orb orc org ori oro orr orv ov- ova ovb ovc ovi ovo ovv ra- raa rab rac rag rai rao rar rav rba rbb rbc rbg rbi rbo rbr rca rcb rcc rcg rci rco rcr rcv rga rgb rgc rgg rgi rgo rgr rgv ria rib ric rig rii rio rir riv roa rob roc rog roi roo ror rov rra rrb rrc rrg rri rrr rva rvb rvc rvg rvi rvo rvr rvv v-a vaa vab vac vag vai vao var vav vba vbc vbg vbi vbo vbr vbv vca vcc vci vco vcr vga vgc vgg vgo vgr vi- via vib vic vig vii vio vir viv voa vob voc vog voi voo vor vov vra vrb vrc vrg vri vrr vva vvb vvc vvg vvi vvo vvr vvv